Conveying logistics line and method, and logistics control method for pallets

Abstract

A conveying logistics line and a method, and a logistics control method for pallets, the conveying logistics line comprising an empty pallet conveying line (5), a first full pallet conveying line (3), a second full pallet conveying line (4), a converging conveying line (63), a workpiece pickup station (7), and an electrical control module. The electrical control module is communicatively connected to the empty pallet conveying line (5) and is configured for controlling, according to information on the real-time number of full pallets (9) on the first full pallet conveying line (3) and on the second full pallet conveying line (4), the number of empty pallets (8) to be conveyed by the empty pallet conveying line (5) to each first workpiece manufacturing machine (1) and each second workpiece manufacturing machine (2), so as to achieve a stable conveying state during a set operating time of the conveying logistics line, wherein the stable conveying state comprises the real-time number of full pallets (9) on the first full pallet conveying line (3) and the real-time number of full pallets (9) on the second full pallet conveying line (4) being within a first set range and a second set range, respectively.

Description

Transportation logistics line and method, tray logistics control method

[0001] Cross-reference to related disclosures

[0002] The present disclosure is based on and claims priority to Chinese Patent Application No. 202410233414.2, filed on March 1, 2024, entitled “Transportation logistics line and method, tray logistics control method”, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of battery manufacturing, and in particular to a transportation logistics line and method, and a tray logistics control method. BACKGROUND

[0004] New energy batteries are increasingly widely used in life and industry. For example, new energy vehicles equipped with batteries have been widely used. In addition, batteries are increasingly used in the field of energy storage and the like.

[0005] In the production process of a battery, each component of the battery, such as a bare cell, needs to be transported through a transportation logistics line. For a battery monomer composed of bare cells of different structures, different transportation routes need to be used to transport the bare cells in production. Therefore, the structure of the transportation logistics line is easily complex, and occupies a large space. Therefore, how to simplify such a transportation logistics line is one of the subjects that the industry needs to study.

[0006] In addition, the transportation efficiency of the bare cell is an important factor related to the production efficiency of the battery. Therefore, how to simplify the structure of the cell transportation logistics line while improving the transportation efficiency is one of the subjects that the industry needs to study.

[0007] SUMMARY

[0008] To solve the above technical problems, the present disclosure provides a transportation logistics line and method, and a tray logistics control method, which have a simplified structure and high transportation efficiency.

[0009] The present disclosure is implemented by the following technical solutions.

[0010] The first aspect of the present disclosure provides a transportation logistics line, comprising:

[0011] A plurality of workpiece manufacturing machines are sequentially distributed along the extension direction of the empty tray transportation line, and the plurality of workpiece manufacturing machines include at least one first workpiece manufacturing machine and at least one second workpiece manufacturing machine which are alternately distributed. The empty tray transportation line is connected to the input end of each workpiece manufacturing machine, and the empty tray transportation line is configured to be capable of transporting an empty tray without carrying a workpiece to each workpiece manufacturing machine.

[0012] A first real tray conveying line is connected to the output end of each of the first workpiece manufacturing machines, and is configured to receive and convey the real trays carrying the first workpieces from each of the first workpiece manufacturing machines;

[0013] A second real tray conveying line is connected to the output end of each of the second workpiece manufacturing machines, and is configured to receive and convey the real trays carrying the second workpieces from each of the second workpiece manufacturing machines;

[0014] A converging conveying line is connected to the first real tray conveying line and the second real tray conveying line, and is configured to receive the real trays from the first real tray conveying line and the second real tray conveying line according to a preset order;

[0015] A workpiece taking station has an input end connected to the output end of the converging conveying line and an output end connected to the input end of the empty tray conveying line;

[0016] An electrical control module is communicatively connected to the empty tray conveying line, and is configured to control the number of empty trays conveyed to each of the first workpiece manufacturing machines and each of the second workpiece manufacturing machines according to real-time quantity information of the real trays in the first real tray conveying line and the second real tray conveying line, so as to reach a stable conveying state within a set time of the conveying logistics line, wherein the stable conveying state includes that the real-time quantities of the real trays in the first real tray conveying line and the second real tray conveying line are respectively within a first set range and a second set range.

[0017] The conveying logistics line only has an empty tray conveying line for conveying empty trays, thereby reducing the number of conveying lines and simplifying the structure of the conveying logistics line. The conveying logistics line is applied to the process of manufacturing battery monomers. The electrical control module controls the number of empty trays conveyed to each workpiece manufacturing machine according to the real-time quantities of the two kinds of bare cells, thereby affecting the output speed of the two kinds of bare cells, so that the real-time quantity difference between the two kinds of bare cells can be reduced over time, thereby reaching a stable conveying state, and enabling the stable and continuous production of battery monomers, thereby improving the production efficiency of battery monomers.

[0018] In some embodiments, the first real tray conveying line is provided with a first tray quantity detection assembly for detecting the relationship between the real-time quantity of the real trays on the first real tray conveying line and the upper limit value and the lower limit value of the first set range; the second real tray conveying line is provided with a second tray quantity detection assembly for detecting the relationship between the real-time quantity of the real trays on the second real tray conveying line and the upper limit value and the lower limit value of the second set range; the electrical control module is in communication connection with the first tray quantity detection assembly and the second tray quantity detection assembly, and can control the quantity of the empty trays conveyed by the empty tray conveying line to each of the first workpiece manufacturing machines and each of the second workpiece manufacturing machines according to the data information detected by the first tray quantity detection assembly and the second tray quantity detection assembly.

[0019] The first tray quantity detection assembly can detect whether the quantity of the real trays on the first real tray conveying line is less than the lower limit value of the first set range, more than the upper limit value of the first set range, or within the first set range, and the second tray quantity detection assembly can detect whether the quantity of the real trays on the second real tray conveying line is less than the lower limit value of the second set range, more than the upper limit value of the second set range, or within the second set range, so as to obtain real-time quantity information of the real trays, provide a basis for the control of the empty tray conveying line by the electrical control module, and make the empty tray conveying line distribute appropriate quantity of empty trays to the two workpiece manufacturing machines, so as to adjust the output speed of the two workpiece manufacturing machines, and make the real-time quantity of the two kinds of bare electric cores reach a basic balance after working for a certain period of time. In this way, the stable and continuous production of the battery monomers can be ensured, and the production efficiency of the battery monomers is improved.

[0020] In some embodiments, the first tray quantity detection assembly comprises a first material shortage detection sensor and a first material fullness detection sensor, and the first material shortage detection sensor and the first material fullness detection sensor are sequentially arranged on the conveying path of the first real tray conveying line. In the case that the real-time quantity of the real trays on the first real tray conveying line is less than the lower limit value of the first set range, the first material shortage detection sensor is triggered; and in the case that the real-time quantity of the real trays on the first real tray conveying line is greater than the upper limit value of the first set range, the first material fullness detection sensor is triggered.

[0021] The second tray quantity detection assembly comprises a second material shortage detection sensor and a second material fullness detection sensor, which are arranged in sequence on a conveying path of the second real tray conveying line. The second material shortage detection sensor is triggered when the real-time quantity of the real trays on the second real tray conveying line is less than the lower limit value of the second set range. The second material fullness detection sensor is triggered when the real-time quantity of the real trays on the second real tray conveying line is greater than the upper limit value of the second set range.

[0022] In this way, the first tray quantity detection assembly detects the relationship between the real-time quantity of the first workpieces and the upper limit value and the lower limit value of the first set range, that is, whether the real-time quantity of the first workpieces is within the first set range, less than the lower limit value of the first set range, or greater than the upper limit value of the first set range. The second tray quantity detection assembly detects the relationship between the real-time quantity of the second workpieces and the upper limit value and the lower limit value of the second set range, that is, whether the real-time quantity of the second workpieces is within the second set range, less than the lower limit value of the second set range, or greater than the upper limit value of the second set range. The real-time quantity information of the first workpieces and the second workpieces provides a basis for the electrical control module to control the empty tray conveying line, so that the empty tray conveying line is allocated with appropriate quantities of empty trays for the two workpiece manufacturing machines, thereby adjusting the output speed of the two workpiece manufacturing machines. After working for a certain period of time, the real-time quantities of the two bare battery cells can be balanced, so that the battery cell production can be stably and continuously carried out, thereby improving the production efficiency of the battery cells.

[0023] In some embodiments, the electrical control module has a first control mode, a second control mode, and a third control mode,

[0024] When the real-time quantity of the real trays on the first real tray conveying line and the real-time quantity of the real trays on the second real tray conveying line are within the first set range and the second set range, respectively, or are less than the lower limit value of the first set range and the lower limit value of the second set range, respectively, or are greater than the upper limit value of the first set range and the upper limit value of the second set range, respectively, the electrical control module adopts the first control mode, which is also the initial default mode.

[0025] When the real-time quantity of the real trays on the first real tray conveying line is less than the lower limit value of the first set range, and the real-time quantity of the real trays on the second real tray conveying line is greater than the upper limit value of the second set range, the electrical control module adopts the second control mode.

[0026] In a case that the real-time quantity of the real pallets in the first real pallet conveying line is greater than the upper limit value of the first set range, and the real-time quantity of the real pallets in the second real pallet conveying line is less than the lower limit value of the second set range, the electrical control module adopts the third control mode.

[0027] The above three control modes are switched according to the real-time quantity information of the real pallets, so that the conveying logistics line in the unbalanced state can reach a stable conveying state within a set time, thereby enabling the stable and continuous production of the battery monomer, and further improving the production efficiency of the battery monomer.

[0028] In some embodiments, in the first control mode, the electrical control module controls the empty pallet conveying line to sequentially input a set number of empty pallets from the first to the last workpiece manufacturing machine, and after all the workpiece manufacturing machines satisfy the set number of empty pallets, the empty pallet conveying line sequentially increases one empty pallet from the first to the last workpiece manufacturing machine until the number of empty pallets cached by each workpiece manufacturing machine reaches the maximum allowed cache amount.

[0029] In the second control mode, the electrical control module controls the empty pallet conveying line to preferentially input empty pallets to the first workpiece manufacturing machine, keeps the number of empty pallets cached by each first workpiece manufacturing machine reaching the maximum allowed cache amount, and inputs at least the set number of empty pallets to the second workpiece manufacturing machine and temporarily stores these empty pallets outside the entrance of the second workpiece manufacturing machine.

[0030] The empty pallets temporarily stored outside the entrance of the second workpiece manufacturing machine are used to input the second workpiece manufacturing machine when the conveying logistics line is switched from the second control mode to the first control mode.

[0031] In the third control mode, the electrical control module controls the empty pallet conveying line to preferentially input empty pallets to the second workpiece manufacturing machine, keeps the number of empty pallets cached by each second workpiece manufacturing machine reaching the maximum allowed cache amount, and inputs at least the set number of empty pallets to the first workpiece manufacturing machine and temporarily stores these empty pallets outside the entrance of the first workpiece manufacturing machine.

[0032] The empty pallets temporarily stored outside the entrance of the first workpiece manufacturing machine are used to input the first workpiece manufacturing machine when the conveying logistics line is switched from the third control mode to the first control mode.

[0033] The above are specific operation modes of the three control modes, which can make the real-time quantity of the real pallets in the first real pallet conveying line and the real-time quantity of the real pallets in the second real pallet conveying line respectively within the first set range and the second set range within a set time of the conveying logistics line.

[0034] In some embodiments, the set number includes 3.

[0035] The temporary storage of the empty trays outside the entrance of the workpiece manufacturing machine is to timely input the empty trays into the workpiece manufacturing machine after switching the control mode, so that the workpiece manufacturing machine timely runs, and the temporary storage of 3 empty trays outside the entrance of the workpiece manufacturing machine can meet the demand of the workpiece manufacturing machine for empty trays in a short time, and can also leave enough empty trays for other workpiece manufacturing machines, so that the empty trays can circulate sufficiently, thereby ensuring the normal operation of the conveying logistics line.

[0036] In some embodiments, the conveying paths of the first real tray conveying line, the second real tray conveying line and the empty tray conveying line are sequentially distributed from top to bottom, and the workpiece manufacturing machine is arranged on the same side of the first real tray conveying line, the second real tray conveying line and the empty tray conveying line.

[0037] In this way, the first real tray conveying line, the second real tray conveying line and the empty tray conveying line occupy less space, and the distances between the first real tray conveying line, the second real tray conveying line, the empty tray conveying line and the workpiece manufacturing machine are relatively short, thereby reducing the space occupied by the conveying logistics line.

[0038] In some embodiments, the conveying paths of the second real tray conveying line, the converging conveying line and the workpiece taking station have the same height, the conveying logistics line further includes a first lifting mechanism, a third real tray conveying line and a second lifting mechanism, the conveying path of the third real tray conveying line has the same height as the conveying path of the second real tray conveying line, the top input end and the bottom output end of the first lifting mechanism are connected to the output end of the first real tray conveying line and the input end of the third real tray conveying line respectively, the output end of the third real tray conveying line is connected to the input end of the converging conveying line, and the top input end and the bottom output end of the second lifting mechanism are connected to the output end of the workpiece taking station and the input end of the empty tray conveying line respectively.

[0039] In this way, the circulation of the trays is completed, thereby realizing the transportation of the workpieces. The conveying logistics line has a simple structure, a reasonable layout and a small space occupation.

[0040] In some embodiments, the workpieces include bare cells.

[0041] The conveying logistics line is applied to the scheme of conveying bare cells, realizes the conveying of the bare cells, and can keep the stable and continuous production of the battery monomers, thereby improving the production efficiency of the battery monomers.

[0042] The second aspect of the present disclosure provides a tray logistics control method applied to a conveying logistics line, wherein the conveying logistics line comprises:

[0043] an empty tray conveying line, a plurality of workpiece manufacturing machines are sequentially distributed along the extension direction of the empty tray conveying line, the plurality of workpiece manufacturing machines comprise at least one first workpiece manufacturing machine and at least one second workpiece manufacturing machine which are alternately distributed, the empty tray conveying line is connected with the input end of each workpiece manufacturing machine, and the empty tray conveying line is configured to be capable of conveying an empty tray which does not carry a workpiece to each workpiece manufacturing machine;

[0044] a first real tray conveying line connected with the output end of each first workpiece manufacturing machine, the first real tray conveying line is configured to be capable of receiving and conveying a real tray which carries a first workpiece from each first workpiece manufacturing machine;

[0045] a second real tray conveying line connected with the output end of each second workpiece manufacturing machine, the second real tray conveying line is configured to be capable of receiving and conveying a real tray which carries a second workpiece from each second workpiece manufacturing machine;

[0046] a converging conveying line connected with the first real tray conveying line and the second real tray conveying line, the converging conveying line receives the real trays from the first real tray conveying line and the second real tray conveying line according to a preset order;

[0047] a workpiece taking station, the input end and the output end of the workpiece taking station are connected with the output end of the converging conveying line and the input end of the empty tray conveying line respectively;

[0048] an electrical control module, the electrical control module is communicatively connected with the empty tray conveying line, and the electrical control module controls the empty tray conveying line by using the control method so that a stable conveying state is achieved within a working set time of the conveying logistics line, wherein the stable conveying state comprises that the real-time number of real trays in the first real tray conveying line and the second real tray conveying line respectively falls within a first set range and a second set range;

[0049] the control method comprises:

[0050] a real-time number information acquisition step, the electrical control module acquires real-time number information of the real trays in the first real tray conveying line and the real trays in the second real tray conveying line;

[0051] an empty tray distribution step, the electrical control module controls the number of empty trays conveyed by the empty tray conveying line to each first workpiece manufacturing machine and each second workpiece manufacturing machine according to the real-time number information.

[0052] In the above conveying process, the electrical control module controls the number of empty trays conveyed to each workpiece manufacturing machine according to the real-time quantity information of the two types of bare cells, thereby affecting the output speed of the two types of bare cells. Therefore, the real-time quantity difference between the two types of bare cells can be reduced over time, thereby achieving a stable conveying state. This enables stable and continuous battery cell production, thereby improving the production efficiency of battery cells.

[0053] In some embodiments, the electrical control module has a first control mode, a second control mode, and a third control mode, the first control mode being an initial default mode, and the empty tray allocation step includes:

[0054] When the real-time quantity of the real trays in the first real tray conveying line and the real-time quantity of the real trays in the second real tray conveying line are respectively within the first set range and the second set range, or are respectively less than the lower limit value of the first set range and the lower limit value of the second set range, or are respectively greater than the upper limit value of the first set range and the upper limit value of the second set range, the electrical control module adopts the first control mode;

[0055] When the real-time quantity of the real trays in the first real tray conveying line is less than the lower limit value of the first set range, and the real-time quantity of the real trays in the second real tray conveying line is greater than the upper limit value of the second set range, the electrical control module adopts the second control mode;

[0056] When the real-time quantity of the real trays in the first real tray conveying line is greater than the upper limit value of the first set range, and the real-time quantity of the real trays in the second real tray conveying line is less than the lower limit value of the second set range, the electrical control module adopts the third control mode.

[0057] The above three control modes are switched according to the real-time quantity of the real trays, so that the conveying logistics line in an unbalanced state can reach a stable conveying state within a set time, thereby enabling stable and continuous battery cell production, and further improving the production efficiency of battery cells.

[0058] In some embodiments, in the first control mode, the electrical control module controls the empty tray conveying line to sequentially convey a set number of empty trays from the first workpiece manufacturing machine to the last workpiece manufacturing machine. When all workpiece manufacturing machines satisfy the set number of empty trays, one empty tray is sequentially added from the first workpiece manufacturing machine to the last workpiece manufacturing machine in a cycle, until the number of empty trays cached by each workpiece manufacturing machine reaches the maximum allowed cache amount.

[0059] In the second control mode, the electrical control module controls the empty tray conveying line to preferentially input empty trays to the first workpiece manufacturing machines, keeps the number of empty trays cached by each of the first workpiece manufacturing machines to reach the maximum allowed cache amount, and conveys at least the set number of empty trays to the second workpiece manufacturing machines and temporarily stores the empty trays outside the entrances of the second workpiece manufacturing machines.

[0060] In the third control mode, the electrical control module controls the empty tray conveying line to preferentially input empty trays to the second workpiece manufacturing machines, keeps the number of empty trays cached by each of the second workpiece manufacturing machines to reach the maximum allowed cache amount, and conveys at least the set number of empty trays to the first workpiece manufacturing machines and temporarily stores the empty trays outside the entrances of the first workpiece manufacturing machines.

[0061] The set number includes 3.

[0062] The above is the specific operation method of the three control modes, which can make the real-time number of real trays in the first real tray conveying line and the second real tray conveying line respectively within the first set range and the second set range within the set time of the conveying logistics line.

[0063] A third aspect of the present disclosure provides a conveying logistics method using a conveying logistics line, the conveying logistics line comprising:

[0064] An empty tray conveying line, a plurality of workpiece manufacturing machines are sequentially distributed along the extension direction of the empty tray conveying line, the plurality of workpiece manufacturing machines include at least one first workpiece manufacturing machine and at least one second workpiece manufacturing machine which are alternately distributed;

[0065] A first real tray conveying line connected to the output end of each of the first workpiece manufacturing machines, the first real tray conveying line is configured to be able to receive and convey the real tray carrying the first workpiece from each of the first workpiece manufacturing machines;

[0066] A second real tray conveying line connected to the output end of each of the second workpiece manufacturing machines, the second real tray conveying line is configured to be able to receive and convey the real tray carrying the second workpiece from each of the second workpiece manufacturing machines;

[0067] A converging conveying line connected to the first real tray conveying line and the second real tray conveying line;

[0068] A workpiece taking station, the input end and the output end of which are connected to the output end of the converging conveying line and the input end of the empty tray conveying line;

[0069] An electrical control module, which is communicatively connected to the empty tray conveying line;

[0070] The conveying logistics method comprises:

[0071] An electrical control step, in which the electrical control module acquires real-time quantity information of the real trays in the first real tray conveying line and the second real tray conveying line, and controls the number of empty trays conveyed by the empty tray conveying line to each of the first workpiece manufacturing machines and the second workpiece manufacturing machines according to the real-time quantity information;

[0072] A workpiece receiving step, in which the workpiece manufacturing machines input empty trays to a receiving position, and put manufactured workpieces into the empty trays, and then output the real trays carrying the workpieces to the first real tray conveying line and the second real tray conveying line, wherein the first workpiece manufacturing machines and the second workpiece manufacturing machines output the real trays to the first real tray conveying line and the second real tray conveying line, respectively;

[0073] A merging step, in which the merging conveying line receives the real trays from the first real tray conveying line and the second real tray conveying line according to a preset sequence;

[0074] A workpiece taking step, in which the workpiece taking station receives the real trays from the merging conveying line, the workpieces in the real trays are taken out, and empty trays are left at an output end of the workpiece taking station, and the empty trays are conveyed by the workpiece taking station to the empty tray conveying line;

[0075] The conveying logistics line reaches a stable conveying state within a working setting time using the conveying logistics method, and the stable conveying state comprises that the real-time quantities of the real trays in the first real tray conveying line and the second real tray conveying line are respectively within a first setting range and a second setting range.

[0076] In the conveying process, the electrical control module controls the number of empty trays conveyed to each workpiece manufacturing machine according to the real-time quantity information of the two types of bare cells, thereby affecting the output speed of the two types of bare cells. Therefore, as time goes on, the real-time quantity difference between the two types of bare cells can be reduced, thereby reaching a stable conveying state. The stable and continuous production of battery monomers can be ensured, thereby improving the production efficiency of battery monomers.

[0077] In some embodiments, the electrical control step comprises:

[0078] An initial allocation step, in which the electrical control module controls the empty tray conveying line to convey empty trays not carrying workpieces to each of the workpiece manufacturing machines in an initial default mode;

[0079] a real-time quantity information acquisition step, in which the electrical control module acquires real-time quantity information of the real trays in the first real tray conveying line and the real trays in the second real tray conveying line;

[0080] a empty tray allocation step, in which the electrical control module controls the empty tray conveying line to convey a number of empty trays to each of the first workpiece manufacturing machine and the second workpiece manufacturing machine according to the real-time quantity information.

[0081] In this way, the real-time quantity information of the first workpieces and the second workpieces can be acquired through the above steps, which provides a basis for the control of the empty tray conveying line by the electrical control module, so that the empty tray conveying line allocates appropriate number of empty trays to the two workpiece manufacturing machines, thereby adjusting the output speed of the two workpiece manufacturing machines, and after a certain period of work, the real-time quantity of the two bare electric cores can be balanced, so that the battery cell production can be stably and continuously carried out, thereby improving the production efficiency of the battery cells.

[0082] In some embodiments, the electrical control module has a first control mode, a second control mode and a third control mode, the first control mode is the initial default mode, and the empty tray allocation step includes:

[0083] In a case where the real-time quantity of the real trays in the first real tray conveying line and the real-time quantity of the real trays in the second real tray conveying line are respectively within the first set range and the second set range, or are respectively less than the lower limit value of the first set range and the lower limit value of the second set range, or are respectively greater than the upper limit value of the first set range and the upper limit value of the second set range, the electrical control module adopts the first control mode;

[0084] In a case where the real-time quantity of the real trays in the first real tray conveying line is less than the lower limit value of the first set range, and the real-time quantity of the real trays in the second real tray conveying line is greater than the upper limit value of the second set range, the electrical control module adopts the second control mode;

[0085] In a case where the real-time quantity of the real trays in the first real tray conveying line is greater than the upper limit value of the first set range, and the real-time quantity of the real trays in the second real tray conveying line is less than the lower limit value of the second set range, the electrical control module adopts the third control mode.

[0086] The above three control modes are switched according to the real-time quantity information of the real trays, so that the conveying logistics line in the unbalanced state can reach a stable conveying state within a set time, thereby enabling the battery cell production to be stably and continuously carried out, and further improving the production efficiency of the battery cells.

[0087] In some embodiments, in the first control mode, the electrical control module controls the empty tray conveying line to convey a set number of empty trays from the first workpiece manufacturing machine to the last workpiece manufacturing machine in turn, and after all the workpiece manufacturing machines meet the set number of empty trays, the empty tray conveying line is controlled to increase one empty tray from the first workpiece manufacturing machine to the last workpiece manufacturing machine in turn until the number of empty trays cached by each workpiece manufacturing machine reaches the maximum allowed cache amount;

[0088] In the second control mode, the electrical control module controls the empty tray conveying line to preferentially input empty trays to the first workpiece manufacturing machine, keeps the number of empty trays cached by each first workpiece manufacturing machine to reach the maximum allowed cache amount, and conveys at least the set number of empty trays to the second workpiece manufacturing machine and temporarily stores these empty trays outside the entrance of the second workpiece manufacturing machine;

[0089] In the third control mode, the electrical control module controls the empty tray conveying line to preferentially input empty trays to the second workpiece manufacturing machine, keeps the number of empty trays cached by each second workpiece manufacturing machine to reach the maximum allowed cache amount, and conveys at least the set number of empty trays to the first workpiece manufacturing machine and temporarily stores these empty trays outside the entrance of the first workpiece manufacturing machine;

[0090] The set number includes 3.

[0091] The above is the specific operation mode of the three control modes, which can make the real-time number of real trays in the first real tray conveying line and the second real tray conveying line respectively within the first set range and the second set range within the conveying logistics line working set time.

[0092] Inventive Effects

[0093] Through the present disclosure, a conveying logistics line and method with simplified structure and high conveying efficiency, and a tray logistics control method are provided. BRIEF DESCRIPTION OF DRAWINGS

[0094] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The detailed description is made with reference to the accompanying drawings.

[0095] FIG. 1 is a front view of a conveying logistics line according to some embodiments of the present disclosure;

[0096] FIG. 2 is a top view of a conveying logistics line according to some embodiments of the present disclosure;

[0097] Fig. 3 is a side schematic view of the conveying logistics line at the first workpiece manufacturing machine according to some embodiments of the present disclosure;

[0098] Fig. 4 is a side schematic view of the conveying logistics line at the second workpiece manufacturing machine according to some embodiments of the present disclosure;

[0099] Fig. 5 is a top view of the conveying logistics line divided into three layers according to some embodiments of the present disclosure;

[0100] Fig. 6 is a top view of the empty tray conveying line in three control modes respectively according to some embodiments of the present disclosure;

[0101] Fig. 7 is a flowchart of a tray logistics control method according to some embodiments of the present disclosure;

[0102] Fig. 8 is a flowchart of a tray logistics control method according to some other embodiments of the present disclosure;

[0103] Fig. 9 is a flowchart of a conveying logistics method according to some embodiments of the present disclosure;

[0104] Fig. 10 is a flowchart of a conveying logistics method according to some other embodiments of the present disclosure;

[0105] Fig. 11 is a flowchart of a conveying logistics method according to some further embodiments of the present disclosure.

[0106] BRIEF DESCRIPTION OF DRAWINGS 1 first workpiece manufacturing machine; 2 second workpiece manufacturing machine; 3 first solid tray conveying line; 4 second solid tray conveying line; 5 empty tray conveying line; 61 first lifting mechanism; 62 solid tray conveying line; 63 merging conveying line; 64 second lifting mechanism; 7 workpiece taking station; 8 empty tray; 9 solid tray; 11 first material shortage detection sensor; 12 first material sufficiency detection sensor; 13 second material shortage detection sensor; 14 second material sufficiency detection sensor. DETAILED DESCRIPTION

[0107] The embodiments of the technical solutions of the present disclosure will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present disclosure, and therefore only serve as examples, and cannot limit the protection scope of the present disclosure.

[0108] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present disclosure belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure; the terms "comprise" and "have" and any variations thereof in the specification and the above drawings description of the present disclosure are intended to cover non-exclusive inclusion.

[0109] In the description of the embodiments of the disclosure, the technical terms "first", "second", "third" and the like are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the disclosure, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0110] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the disclosure. The occurrence of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0111] In the description of the embodiments of the disclosure, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which means that there are three cases of A alone, A and B together, and B alone. In addition, the character " / " herein generally represents an "or" relationship between the front and rear associated objects.

[0112] In the description of the embodiments of the disclosure, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the embodiments of the disclosure and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed in a particular orientation, be operated or used, and therefore cannot be understood as a limitation on the embodiments of the disclosure.

[0113] In the description of the embodiments of the disclosure, unless otherwise explicitly specified and limited, the technical terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanical connection, or it can be electrical connection; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the disclosure can be understood according to the specific circumstances.

[0114] In the description of the embodiments of the disclosure, unless otherwise explicitly specified and limited, the technical term "contact" should be understood in a broad sense, which can be direct contact or contact through an intermediate medium layer, which can be contact between two objects in contact without interaction force, or contact between two objects in contact with interaction force.

[0115] Hereinafter, the present disclosure will be described in detail.

[0116] At present, new energy batteries are increasingly widely used in life and industry. New energy batteries are not only applied to energy storage power systems such as hydroelectric, thermal, wind and solar power stations, but also widely used in electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also increasing.

[0117] In the production process of the battery, each component of the battery, such as the bare cell, needs to be transported through the conveying logistics line. In the production of battery monomers, there are cases of pairing bare cells with different structures (such as different winding methods) into a shell. For battery monomers composed of bare cells with different structures, multiple parallel conveying lines are usually used to transport multiple bare cells during production. The bare cells with different structures can be bare cells with inconsistent winding methods. Here, taking the scenario of pairing bare cells with two different winding methods into a shell as an example, the bare cells with two different winding methods can be referred to as A-type bare cells and B-type bare cells. During production, they need to be paired and used one by one to form patterns such as ABAB, ABBA, and then assembled into a shell to form a battery monomer.

[0118] For such a bare cell conveying logistics line, in the related art, an input line for inputting empty trays to the winding machine and an output line for receiving and conveying away the real tray with the bare cell from the winding machine are arranged for each winding machine of each type of bare cell. Such configuration makes the structure of the entire cell conveying logistics line complex, the equipment cost is high, and the space occupied is large.

[0119] In view of the above related art, it is considered to combine the input lines of the input empty trays of multiple winding machines into one, that is, each type of winding machine shares one input line, reducing the number of input lines and simplifying the structure. However, since the winding machines for winding different bare cells cannot continuously supply material due to the need for material switching, there is a situation of intermittent material output mismatch between winding machines. Sharing one input line can easily lead to an unreasonable number of empty trays allocated to various winding machines, for example, the winding speed of A-type winding machines remains unchanged, while the B-type winding machines are in a state of waiting for material switching, the speed of producing B-type bare cells decreases, resulting in a relatively small number of B-type bare cells, and a relatively large number of A-type bare cells. If the previous proportion is continued to allocate empty trays to A winding machines and B winding machines, it is easy to make the output of A-type bare cells relatively more and the output of B-type bare cells relatively less, which can easily cause the lack of B-type bare cells and lead to the integration of A-type bare cells and B-type bare cells to continue, thereby affecting the production efficiency of the battery monomer.

[0120] To this end, the inventor of the present disclosure finds through research that the number of empty trays allocated to the A-type winding machine and the B-type winding machine can be adjusted according to the real-time number of A-type bare cells and B-type bare cells, so that the bare cells with a larger real-time number are produced at a slower speed, and the bare cells with a smaller real-time number are produced at a relatively faster speed. After working in this mode for a certain period of time, the real-time number of the two types of bare cells can be balanced, so that the stable and continuous production of bare cells can be ensured, thereby improving the production efficiency of bare cells.

[0121] Based on such a design concept, the inventor of the present disclosure designs a conveying logistics line, which comprises an empty tray conveying line, a first real tray conveying line, a second real tray conveying line, a confluence conveying line, a workpiece taking station and an electrical control module. A plurality of workpiece manufacturing machines are sequentially distributed along the extension direction of the empty tray conveying line, and the plurality of workpiece manufacturing machines comprise at least one first workpiece manufacturing machine and at least one second workpiece manufacturing machine which are alternately distributed. The first workpiece manufacturing machine and the second workpiece manufacturing machine are used to manufacture first-type bare cells (also referred to as A-type bare cells) and second-type bare cells (also referred to as B-type bare cells) respectively. The empty tray conveying line is connected with the input end of each workpiece manufacturing machine, and is configured to convey empty trays without carrying workpieces to each workpiece manufacturing machine. The first real tray conveying line is connected with the output end of each first workpiece manufacturing machine, and is configured to receive and convey real trays carrying first workpieces from each first workpiece manufacturing machine. The second real tray conveying line is connected with the output end of each second workpiece manufacturing machine, and is configured to receive and convey real trays carrying second workpieces from each second workpiece manufacturing machine. The confluence conveying line is connected to the first real tray conveying line and the second real tray conveying line, and is configured to receive real trays from the first real tray conveying line and the second real tray conveying line according to a preset order. The input end and the output end of the workpiece taking station are connected to the output end of the confluence conveying line and the input end of the empty tray conveying line respectively. The electrical control module is communicatively connected to the empty tray conveying line, and is configured to control the number of empty trays conveyed by the empty tray conveying line to each first workpiece manufacturing machine and each second workpiece manufacturing machine according to real-time number information of real trays on the first real tray conveying line and the second real tray conveying line, so as to reach a stable conveying state within a set time of the conveying logistics line. The stable conveying state includes that the real-time number of real trays on the first real tray conveying line and the second real tray conveying line is respectively within a first set range and a second set range.

[0122] The conveying logistics line is applied to conveying bare battery cells in a battery cell production process. The first workpiece manufacturing machine is used for winding A-type bare battery cells, and the second workpiece manufacturing machine is used for winding B-type bare battery cells. The electrical control module adjusts the number of empty trays allocated to the A winding machine and the B winding machine according to the real-time number of A-type bare battery cells and B-type bare battery cells, so that the bare battery cells with a larger real-time number are output at a slower speed, and the bare battery cells with a smaller real-time number are output at a relatively faster speed. This mode of operation can balance the real-time number of the two types of bare battery cells after a certain period of time, so that the battery cell production can be stably and continuously carried out, thereby improving the production efficiency of the battery cells.

[0123] The conveying logistics line provided by the embodiments of the present disclosure can be used in the battery production process, for example, for conveying bare battery cells for batteries. Of course, those skilled in the art should understand that the conveying logistics line provided by the embodiments of the present disclosure is not only used for conveying bare battery cells in the battery production process, but also can be used for conveying other workpieces that need to be conveyed.

[0124] In the embodiments of the present disclosure, the battery cell can be a secondary battery, which refers to a battery cell that can be activated by charging after discharging.

[0125] The battery cell can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel-hydrogen battery, a nickel-cadmium battery, a lead-acid battery, etc. The embodiments of the present disclosure are not limited thereto.

[0126] Although not shown, the battery cell generally includes an electrode assembly (e.g., a bare battery cell). The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charging and discharging process of the battery cell, active ions (e.g., lithium ions) are embedded and extracted between the positive electrode and the negative electrode. The separator is arranged between the positive electrode and the negative electrode, which can prevent the positive and negative electrodes from short-circuiting, and at the same time, the active ions can pass through.

[0127] In some embodiments, the electrode assembly is provided with a tab (not shown), which can guide the current out of the electrode assembly. The tab includes a positive tab and a negative tab.

[0128] In some embodiments, the battery cell can include a housing. The housing is used to package the electrode assembly and other components such as electrolyte. The housing can be a steel shell, an aluminum shell, a plastic shell (such as polypropylene), a composite metal shell (such as a copper-aluminum composite shell), or an aluminum-plastic film, etc.

[0129] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or a battery cell of other shapes, the prismatic battery cell including a square battery cell, a blade battery cell, a multi-prismatic battery cell, for example, a hexagonal battery cell, etc., and the present disclosure is not particularly limited.

[0130] In some embodiments, the housing includes a shell and an end cover, the shell is provided with an opening, and the end cover closes the opening to form a sealed space for accommodating the electrode assembly and electrolyte and the like. The shell can be provided with one or more openings. The end cover can also be provided with one or more openings.

[0131] In some embodiments, at least one electrode terminal is provided on the housing, and the electrode terminal is electrically connected with the tab. The electrode terminal can be directly connected with the tab or indirectly connected with the tab through an adapter component. The electrode terminal can be provided on the end cover or on the shell.

[0132] In the following, some embodiments of the present disclosure will be described in detail with reference to FIGS. 1 to 6.

[0133] FIG. 1 is a front view of a conveying logistics line according to some embodiments of the present disclosure; FIG. 2 is a top view of the conveying logistics line according to some embodiments of the present disclosure; FIG. 3 is a side view of the conveying logistics line at a first workpiece manufacturing machine according to some embodiments of the present disclosure; FIG. 4 is a side view of the conveying logistics line at a second workpiece manufacturing machine according to some embodiments of the present disclosure; FIG. 5 is a top view of the conveying logistics line divided into three layers according to the position height according to some embodiments of the present disclosure; and FIG. 6 is a top view of an empty tray conveying line of the conveying logistics line in three control modes, respectively, according to some embodiments of the present disclosure.

[0134] As shown in FIGS. 1-4, the present disclosure provides a conveying logistics line, which includes an empty tray conveying line 5, a first real tray conveying line 3, a second real tray conveying line 4, a merging conveying line 63, a workpiece taking station 7, and an electrical control module. A plurality of workpiece manufacturing machines are sequentially arranged along the extension direction of the empty tray conveying line 5, and the plurality of workpiece manufacturing machines include at least one first workpiece manufacturing machine 1 and at least one second workpiece manufacturing machine 2 which are alternately arranged. The empty tray conveying line 5 is connected to the input end of each workpiece manufacturing machine, and is configured to convey an empty tray 8 without a workpiece to each workpiece manufacturing machine. The first real tray conveying line 3 is connected to the output end of each first workpiece manufacturing machine 1, and is configured to receive and convey a real tray 9 carrying a first workpiece from each first workpiece manufacturing machine 1. The second real tray conveying line 4 is connected to the output end of each second workpiece manufacturing machine 2, and is configured to receive and convey a real tray 9 carrying a second workpiece from each second workpiece manufacturing machine 2. The merging conveying line 63 is connected to the first real tray conveying line 3 and the second real tray conveying line 4, and is configured to receive the real tray 9 from the first real tray conveying line 3 and the real tray 9 from the second real tray conveying line 4 according to a preset order. The input end and the output end of the workpiece taking station 7 are connected to the output end of the merging conveying line 63 and the input end of the empty tray conveying line 5, respectively. The electrical control module is communicatively connected to the empty tray conveying line 5, and is configured to control the number of empty trays 8 conveyed by the empty tray conveying line 5 to each first workpiece manufacturing machine 1 and each second workpiece manufacturing machine 2 according to the real-time number information of the real trays 9 in the first real tray conveying line 3 and the second real tray conveying line 4, so as to reach a stable conveying state within a set time of the conveying logistics line. The stable conveying state includes that the real-time number of the real trays 9 in the first real tray conveying line 3 and the real trays 9 in the second real tray conveying line 4 are within a first set range and a second set range, respectively.

[0135] The conveying line is applied to manufacturing battery monomer, the first workpiece manufacturing machine 1 is used for winding A type bare battery cell, the second workpiece manufacturing machine 2 is used for winding B type bare battery cell, the empty tray conveying line 5 conveys empty tray 8 to each first workpiece manufacturing machine 1 and each second workpiece manufacturing machine 2, the empty tray 8 sent into the first workpiece manufacturing machine 1 receives the A type bare battery cell wound by the first workpiece manufacturing machine 1 and is sent out to the first real tray conveying line 3, the empty tray 8 sent into the second workpiece manufacturing machine 2 receives the B type bare battery cell wound by the second workpiece manufacturing machine 2 and is sent out to the second real tray conveying line 4, the real tray 9 on the first real tray conveying line 3 and the real tray 9 on the second real tray conveying line 4 are conveyed to the confluence conveying line 63 one by one according to the preset order, so that the A type bare battery cell and the B type bare battery cell on the confluence conveying line 63 are arranged in the order of bare battery cell in the battery monomer, the bare battery cell arranged in order is taken away and moved to the matching and integrating device for matching and integrating, the bare battery cell on the confluence conveying line 63 is taken away, and the empty tray 8 is left, the empty tray 8 is returned to the empty tray conveying line 5 from the confluence conveying line 63, and the cycle is repeated, so that the bare battery cell is conveyed.

[0136] Exemplarily, in the conveying process, if the number of real trays 9 on the first real tray conveying line 3 and the second real tray conveying line 4 is relatively balanced, the electrical control module controls the empty tray conveying line 5 to convey empty trays 8 to the first workpiece manufacturing machine 1 and each second workpiece manufacturing machine 2 at a relatively balanced proportion; if one or more of a certain type of workpiece manufacturing machine is in a standby state for switching, which reduces the output speed of the bare battery cell of this type, it will make the number of real trays 9 on the first real tray conveying line 3 and the second real tray conveying line 4 differ greatly, that is, the number of bare battery cells on one real tray conveying line is more, and the number of bare battery cells on the other real tray conveying line is less, at this time, the electrical control module increases the number of empty trays 8 allocated to the workpiece manufacturing machine corresponding to the less number of bare battery cells, and reduces the number of empty trays 8 allocated to the workpiece manufacturing machine corresponding to the more number of bare battery cells, so that the less number of bare battery cells is output at a normal speed, and the more number of bare battery cells is output at a speed slower than the normal speed, which can make the real-time number of two types of bare battery cells basically balanced after a certain period of time, so that the stable and continuous production of battery monomer can be realized, thereby improving the production efficiency of battery monomer.

[0137] The structure of the workpiece manufacturing machine, the conveying line and the tray is not particularly limited in the embodiment of the present disclosure, as long as the basic functions of each can be realized, for example, known technologies can be used.

[0138] The electrical control module can be realized by electrical control hardware circuit, in-place sensor, PLC program, etc.

[0139] The conveying logistics line can only have one empty tray conveying line 5 conveying empty trays, reducing the number of conveying lines and simplifying the structure of the conveying logistics line. In the above conveying process, the electrical control module controls the number of empty trays 8 conveyed to each workpiece manufacturing machine according to the real-time number of the two bare cells, thereby affecting the output speed of the two bare cells. Therefore, the real-time number difference between the two bare cells can be reduced over time, thereby achieving a stable conveying state. This enables stable and continuous battery cell production, thereby improving the production efficiency of the battery cells.

[0140] In some embodiments of the present disclosure, as shown in FIG. 5, the first real tray conveying line 3 is provided with a first tray number detection assembly for detecting the relationship between the real-time number of the real tray 9 on the first real tray conveying line 3 and the upper limit and lower limit of the first set range; the second real tray conveying line 4 is provided with a second tray number detection assembly for detecting the relationship between the real-time number of the real tray 9 on the second real tray conveying line 4 and the upper limit and lower limit of the second set range; the electrical control module is in communication connection with the first tray number detection assembly and the second tray number detection assembly, and can control the number of empty trays 8 conveyed by the empty tray conveying line 5 to each first workpiece manufacturing machine 1 and each second workpiece manufacturing machine 2 according to the data information detected by the first tray number detection assembly and the second tray number detection assembly.

[0141] The first tray number detection assembly can detect whether the number of bare cells on the first real tray conveying line is less than the lower limit of the first set range, more than the upper limit of the first set range, or within the first set range. The second tray number detection assembly can detect whether the number of bare cells on the second real tray conveying line is less than the lower limit of the second set range, more than the upper limit of the second set range, or within the second set range, thereby obtaining real-time number information of the real tray 9, providing a basis for the electrical control module to control the empty tray conveying line 5, so that the empty tray conveying line 5 appropriately allocates the number of empty trays 8 to the two workpiece manufacturing machines, thereby adjusting the output speed of the two workpiece manufacturing machines. After working for a certain period of time, the real-time number of the two bare cells can be balanced, thereby enabling stable and continuous battery cell production, thereby improving the production efficiency of the battery cells.

[0142] In some embodiments of the present disclosure, as shown in FIG. 5, the first tray quantity detection assembly includes a first material shortage detection sensor 11 and a first material full detection sensor 12, which are arranged in sequence on the conveying path of the first real tray conveying line 3. The first material shortage detection sensor 11 is triggered when the real-time number of real trays 9 on the first real tray conveying line 3 is less than the lower limit of the first set range, and the first material full detection sensor 12 is triggered when the real-time number of real trays 9 on the first real tray conveying line 3 is greater than the upper limit of the first set range. The second tray quantity detection assembly includes a second material shortage detection sensor 13 and a second material full detection sensor 14, which are arranged in sequence on the conveying path of the second real tray conveying line 4. The second material shortage detection sensor 13 is triggered when the real-time number of real trays 9 on the second real tray conveying line 4 is less than the lower limit of the second set range, and the second material full detection sensor 14 is triggered when the real-time number of real trays 9 on the second real tray conveying line 4 is greater than the upper limit of the second set range.

[0143] The first material shortage detection sensor 11, the first material full detection sensor 12, the second material shortage detection sensor 13, and the second material full detection sensor 14 can be photoelectric sensors, such as photoelectric sensors, photoelectric switches, laser range finders, etc. The first material shortage detection sensor 11, the first material full detection sensor 12, the second material shortage detection sensor 13, and the second material full detection sensor 14 can also be pressure sensors or ultrasonic sensors, etc.

[0144] For example, the first material absence detection sensor 11 is a reflection photoelectric sensor. The real trays 9 on the first real tray conveying line 3 are queued from the output end of the first real tray conveying line 3. When the queued line passes the reflection area of the first material absence detection sensor 11, it indicates that the real-time number of the real trays 9 on the first real tray conveying line 3 is greater than the lower limit value of the first set range. When the queued line does not pass the reflection area of the first material absence detection sensor 11, it indicates that the real-time number of the real trays 9 on the first real tray conveying line 3 is less than the lower limit value of the first set range. In this case, the first material absence detection sensor 11 is triggered to send a trigger signal to the electrical control module. It should be noted that the first real tray conveying line 3 will successively receive the real trays 9 output by the first workpiece manufacturing machine 1, and the reflection area of the first material absence detection sensor 11 will intermittently pass the real trays 9. Therefore, in order to distinguish whether the real trays 9 passing the reflection area of the first material absence detection sensor 11 are already queued or temporarily passed, a time critical value of the first material absence detection sensor 11 sensing the real trays 9 is set. If the first material absence detection sensor 11 senses the existence of the real trays 9 for a short time, for example, the real trays 9 flow away after 5 seconds, which is a temporary passing of the real trays 9. It is determined that the length of the queued line is short, and the queued line does not pass the reflection area of the first material absence detection sensor 11. At this time, the number of real trays 9 is too small, and the first material absence detection sensor 11 is triggered. If the first material absence detection sensor 11 senses the existence of the real trays 9 for a long time, for example, the time of sensing the existence of the real trays 9 is more than 5 seconds, it indicates that the queued line of the real trays 9 has entered the reflection area of the first material absence detection sensor 11, and the queued line of the real trays 9 is long. At this time, it indicates that the number of real trays 9 is relatively large, and the first material absence detection sensor 11 is not triggered. Correspondingly, the first material full detection sensor 12 is a reflection photoelectric sensor. The real trays 9 on the first real tray conveying line 3 are queued from the output end of the first real tray conveying line 3. When the queued line does not pass the reflection area of the first material full detection sensor 12, it indicates that the real-time number of the real trays 9 on the first real tray conveying line 3 is less than the upper limit value of the first set range. When the queued line passes the reflection area of the first material full detection sensor 12, it indicates that the real-time number of the real trays 9 on the first real tray conveying line 3 is greater than the upper limit value of the first set range. In this case, the first material full detection sensor 12 is triggered to send a trigger signal to the electrical control module. Correspondingly, the second material absence detection sensor 13 and the first material absence detection sensor 11 have similar triggering principles, and the second material full detection sensor 14 and the first material full detection sensor 12 have similar triggering principles. The triggering principles of the second material absence detection sensor 13 and the second material full detection sensor 14 will not be introduced here.

[0145] When the four detection sensors are not triggered, the real-time number of the A-type bare battery cell and the B-type bare battery cell is within the first set range and the second set range respectively, at this time, the conveying logistics line is in a stable conveying state, and the balanced distribution mode needs to be used to distribute the empty trays to the two workpiece manufacturing machines; when the first low-material detection sensor 11 is triggered and the second full-material detection sensor 14 is triggered, the conveying logistics line is in an unbalanced state that the A-type bare battery cell is much less than the B-type bare battery cell, when the first full-material detection sensor 12 is triggered and the second low-material detection sensor 13 is triggered, the conveying logistics line is in an unbalanced state that the A-type bare battery cell is much more than the B-type bare battery cell, and the distribution mode with a large number gap needs to be used to distribute the empty trays to the two workpiece manufacturing machines; when the first low-material detection sensor 11 and the second low-material detection sensor 13 are both triggered, or the first full-material detection sensor 12 and the second full-material detection sensor 14 are both triggered, it indicates that the number of the empty trays 8 distributed to the two workpiece manufacturing machines is relatively balanced, and the conveying logistics line is in a balanced conveying state, so the balanced distribution mode needs to be used.

[0146] If the conveying logistics line is in a stable conveying state or a balanced conveying state, the electrical control module controls the empty tray conveying line 5 to convey the empty trays 8 to the first workpiece manufacturing machine 1 and each second workpiece manufacturing machine 2 at a relatively balanced proportion; if the conveying logistics line is in an unbalanced state that the A-type bare battery cell is much less than the B-type bare battery cell, the electrical control module controls the empty tray conveying line 5 to distribute the empty trays 8 to the first workpiece manufacturing machine 1 less and to the second workpiece manufacturing machine 2 more; if the conveying logistics line is in an unbalanced state that the A-type bare battery cell is much more than the B-type bare battery cell, the electrical control module controls the empty tray conveying line 5 to distribute the empty trays 8 to the first workpiece manufacturing machine 1 more and to the second workpiece manufacturing machine 2 less, so that the less number of bare battery cells is produced at a normal speed, and the more number of bare battery cells is produced at a slower speed. After the conveying logistics line works in this mode for a certain period of time, it can reach a stable conveying state, so that the stable and continuous production of the battery monomer is realized, and the production efficiency of the battery monomer is improved.

[0147] Therefore, the first material shortage detection sensor 11 and the first material full detection sensor 12 can detect whether the real-time number of the A-type bare battery cell is within the first set range, less than the lower limit of the first set range, or greater than the upper limit of the first set range, that is, the real-time number information of the A-type bare battery cell; the second material shortage detection sensor 13 and the second material full detection sensor 14 can detect whether the real-time number of the B-type bare battery cell is within the second set range, less than the lower limit of the second set range, or greater than the upper limit of the second set range, that is, the real-time number information of the B-type bare battery cell; the real-time number information of the A-type bare battery cell and the B-type bare battery cell provides a basis for the electrical control module to control the empty tray conveying line 5, so that the empty tray conveying line allocates the appropriate number of empty trays to the two workpiece manufacturing machines, thereby adjusting the output speed of the two workpiece manufacturing machines, and after a certain period of work, the real-time number of the two types of bare battery cells can be balanced, so that the battery cell production can be stably and continuously carried out, thereby improving the production efficiency of the battery cell.

[0148] In some embodiments of the present disclosure, the electrical control module has a first control mode, a second control mode, and a third control mode. When the real-time number of the real tray 9 on the first real tray conveying line 3 and the real-time number of the real tray 9 on the second real tray conveying line 4 are within the first set range and the second set range, respectively, or are less than the lower limit of the first set range and the lower limit of the second set range, respectively, or are greater than the upper limit of the first set range and the upper limit of the second set range, respectively, the electrical control module adopts the first control mode, which is also the initial default mode. When the real-time number of the real tray 9 on the first real tray conveying line 3 is less than the lower limit of the first set range, and the real-time number of the real tray 9 on the second real tray conveying line 4 is greater than the upper limit of the second set range, the electrical control module adopts the second control mode. When the real-time number of the real tray 9 on the first real tray conveying line 3 is greater than the upper limit of the first set range, and the real-time number of the real tray 9 on the second real tray conveying line 4 is less than the lower limit of the second set range, the electrical control module adopts the third control mode.

[0149] The real-time number of the real pallets 9 on the first real pallet conveying line 3 being in the first set range includes the real-time number of the real pallets 9 on the first real pallet conveying line 3 being equal to the upper limit value of the first set range, the real-time number of the real pallets 9 on the first real pallet conveying line 3 being equal to the lower limit value of the first set range, and the real-time number of the real pallets 9 on the first real pallet conveying line 3 being any value between the upper limit value and the lower limit value. The real-time number of the real pallets 9 on the second real pallet conveying line 4 being in the second set range includes the real-time number of the real pallets 9 on the second real pallet conveying line 4 being equal to the upper limit value of the second set range, the real-time number of the real pallets 9 on the second real pallet conveying line 4 being equal to the lower limit value of the second set range, and the real-time number of the real pallets 9 on the second real pallet conveying line 4 being any value between the upper limit value and the lower limit value. That is, when the real-time number of the real pallets 9 on the first real pallet conveying line 3 and the real-time number of the real pallets 9 on the second real pallet conveying line 4 are respectively equal to the upper limit value of the first set range and the upper limit value of the second set range, or respectively equal to the lower limit value of the first set range and the lower limit value of the second set range, or respectively equal to the upper limit value of the first set range and the lower limit value of the second set range, or respectively equal to the lower limit value of the first set range and the upper limit value of the second set range, or respectively between the upper limit value and the lower limit value of the first set range and the upper limit value and the lower limit value of the second set range, the electrical control module adopts the first control mode.

[0150] The above three control modes are switched according to the real-time number information of the real pallets 9, so that the conveying logistics line in the unbalanced state can reach a stable conveying state within a set time, thereby enabling the stable and continuous production of the battery monomers, and further improving the production efficiency of the battery monomers.

[0151] In some embodiments of the present disclosure, referring to (a) in FIG. 6, in the first control mode, the electrical control module controls the empty pallet conveying line 5 to sequentially convey a set number of empty pallets 8 from the first workpiece manufacturing machine to the last workpiece manufacturing machine, and after all the workpiece manufacturing machines satisfy the set number of empty pallets 8, an empty pallet 8 is sequentially added to each workpiece manufacturing machine until the number of empty pallets 8 cached by each workpiece manufacturing machine reaches the maximum allowed cache amount.

[0152] Referring to (b) in FIG. 6, in the second control mode, the electrical control module controls the empty pallet conveying line 5 to preferentially input empty pallets 8 to the first workpiece manufacturing machine 1, maintain the number of empty pallets 8 cached by each first workpiece manufacturing machine 1 to reach the maximum allowed cache amount, and convey at least a set number of empty pallets 8 to the second workpiece manufacturing machine 2 and temporarily store the empty pallets 8 outside the entrance of the second workpiece manufacturing machine 2. The empty pallets 8 temporarily stored outside the entrance of the second workpiece manufacturing machine 2 are used to be input into the second workpiece manufacturing machine 2 when the conveying logistics line is switched from the second control mode to the first control mode.

[0153] Referring to Fig. 6(c), in the third control mode, the electrical control module controls the empty tray conveying line 5 to preferentially input empty trays 8 into the second workpiece manufacturing machines 2, to keep the number of empty trays 8 cached in each second workpiece manufacturing machine 2 to the maximum allowed cache amount, and to convey at least a set number of empty trays 8 to the first workpiece manufacturing machine 1 and temporarily store these empty trays 8 outside the entrance of the first workpiece manufacturing machine 1, and the empty trays 8 temporarily stored outside the entrance of the first workpiece manufacturing machine 1 are used to input into the first workpiece manufacturing machine 1 when the conveying logistics line is switched from the third control mode to the first control mode.

[0154] It can be understood that the maximum allowed cache amount refers to the maximum value of the number of empty trays 8 that can be simultaneously accommodated at the entrance of a workpiece manufacturing machine, and since the size of the empty tray 8 varies according to the size of the bare cell, it can be seen that the maximum allowed cache amount is different for empty trays 8 of different sizes when the workpiece manufacturing machine does not change, that is, the maximum allowed cache amount changes with the change of the size of the bare cell, and the maximum allowed cache amount is determined according to the size of the conveying route of the workpiece manufacturing machine and the size of the empty tray 8 adapted to the bare cell, and the specific value is not specifically limited here.

[0155] Inputting empty trays 8 into a workpiece manufacturing machine refers to sending empty trays 8 into the workpiece manufacturing machine, and the empty trays 8 will receive the wound bare cells as the workpiece manufacturing machine runs, so that the workpiece manufacturing machine continues to run. Temporarily storing empty trays 8 outside the entrance of a workpiece manufacturing machine refers to conveying empty trays 8 to outside the entrance of the workpiece manufacturing machine without entering the workpiece manufacturing machine. In this case, the workpiece manufacturing machine will pause because it does not receive empty trays 8 to receive bare cells, so the speed of the workpiece manufacturing machine to output bare cells is reduced, while another workpiece manufacturing machine continues to run stably because of the normal input of empty trays 8, so that the speed of the another workpiece manufacturing machine to output bare cells does not change. Therefore, after a period of time, the real-time number of two kinds of bare cells can reach a balance, that is, the real-time number of the real trays 9 in the first real tray conveying line 3 and the real trays 9 in the second real tray conveying line 4 are respectively within the first set range and the second set range.

[0156] After the real-time number of two kinds of bare cells reaches a balanced state, the empty trays 8 temporarily stored outside the entrance of the workpiece manufacturing machine are input into the workpiece manufacturing machine, so that the workpiece manufacturing machine starts to run and starts to output bare cells at a normal speed. Temporarily storing empty trays 8 outside the entrance of a workpiece manufacturing machine is to timely input these empty trays 8 into the workpiece manufacturing machine after switching the control mode, so that the workpiece manufacturing machine runs in time, preventing the output speed of the kind of bare cells from being affected due to the untimely input of empty trays 8.

[0157] The above is the specific operation mode of the three control modes, which can make the real-time number of the real pallets 9 in the first real pallet conveying line 3 and the second real pallet conveying line 4 respectively within the first set range and the second set range within the set time of the conveying logistics line.

[0158] In some embodiments of the present disclosure, the set number includes 3.

[0159] The temporary conveying of 3 empty pallets 8 to the workpiece manufacturing machine can not only meet the demand of the workpiece manufacturing machine for empty pallets 8 in a short time, but also leave enough empty pallets 8 for other workpiece manufacturing machines, so that the empty pallets 8 can be circulated sufficiently, thereby ensuring the normal operation of the conveying logistics line.

[0160] In some embodiments of the present disclosure, the set number can be 2, 4, 5 or 6, of course, it can also be other numbers, which are not limited here.

[0161] In some embodiments of the present disclosure, as shown in FIGS. 1 and 2, the conveying paths of the first real pallet conveying line 3, the second real pallet conveying line 4 and the empty pallet conveying line 5 are sequentially distributed from top to bottom, and the workpiece manufacturing machine is arranged on the same side of the first real pallet conveying line 3, the second real pallet conveying line 4 and the empty pallet conveying line 5.

[0162] In this way, the first real pallet conveying line 3, the second real pallet conveying line 4 and the empty pallet conveying line 5 occupy less space, and the distance between the first real pallet conveying line 3, the second real pallet conveying line 4 and the empty pallet conveying line 5 and the workpiece manufacturing machine is relatively short, thereby reducing the space occupied by the conveying logistics line.

[0163] In some embodiments of the present disclosure, as shown in FIG. 5, the conveying paths of the second real pallet conveying line 4, the converging conveying line 63 and the workpiece taking station 7 have the same height; the conveying logistics line further includes a first lifting mechanism 61, a third real pallet conveying line 62 and a second lifting mechanism 64, the conveying path of the third real pallet conveying line 62 and the conveying path of the second real pallet conveying line 4 have the same height, the top input end and the bottom output end of the first lifting mechanism 61 are connected to the output end of the first real pallet conveying line 3 and the input end of the third real pallet conveying line 62 respectively, the output end of the third real pallet conveying line 62 is connected to the input end of the converging conveying line 63, and the top input end and the bottom output end of the second lifting mechanism 64 are connected to the output end of the workpiece taking station 7 and the input end of the empty pallet conveying line 5 respectively.

[0164] The real tray 9 carrying the first workpiece is conveyed to the first lifting mechanism 61 through the first real tray conveying line 3, is lowered through the first lifting mechanism 61 and is conveyed to the third real tray conveying line 62, the real trays 9 on the third real tray conveying line 62 and the real trays 9 on the first real tray conveying line 3 are conveyed to the converging conveying line 63 according to a preset order, the real trays 9 in order on the converging conveying line 63 are conveyed to the workpiece taking station 7, the bare cells in the real tray 9 on the workpiece taking station 7 are taken away, the empty tray 8 is left on the workpiece taking station 7, the empty tray 8 enters the second lifting mechanism 64 from the workpiece taking station 7, is lowered through the second lifting mechanism 64 and is conveyed to the empty tray conveying line 5, and then the empty tray 8 is distributed to each workpiece manufacturing machine through the empty tray conveying line 5.

[0165] In this way, the circulation conveying of the tray is completed, thereby achieving the transportation of the workpiece. The conveying logistics line has a simple structure, a reasonable layout and a small occupied space.

[0166] In some embodiments of the present disclosure, the workpiece comprises a bare cell.

[0167] The conveying logistics line is applied to the scheme of conveying the bare cell, realizes the conveying of the bare cell, and can keep the stable and continuous production of the battery monomer, thereby improving the production efficiency of the battery monomer.

[0168] FIG. 7 is a flowchart of a tray logistics control method according to some embodiments of the present disclosure; and FIG. 8 is a flowchart of a tray logistics control method according to some other embodiments of the present disclosure.

[0169] The embodiment of the present disclosure further provides a tray logistics control method, which is applied to a conveying logistics line, the conveying logistics line comprising an empty tray conveying line 5, a first real tray conveying line 3, a second real tray conveying line 4, a confluence conveying line 63, a workpiece taking station 7 and an electrical control module, a plurality of workpiece manufacturing machines are sequentially distributed along the extension direction of the empty tray conveying line 5, the plurality of workpiece manufacturing machines comprise at least one first workpiece manufacturing machine 1 and at least one second workpiece manufacturing machine 2 which are alternately distributed, the empty tray conveying line 5 is connected with the input end of each workpiece manufacturing machine, and the empty tray conveying line 5 is configured to be capable of conveying an empty tray 8 without carrying a workpiece to each workpiece manufacturing machine; the first real tray conveying line 3 is connected with the output end of each first workpiece manufacturing machine 1, and the first real tray conveying line 3 is configured to be capable of receiving and conveying a real tray 9 carrying a first workpiece from each first workpiece manufacturing machine 1; the second real tray conveying line 4 is connected with the output end of each second workpiece manufacturing machine 2, and the second real tray conveying line 4 is configured to be capable of receiving and conveying a real tray 9 carrying a second workpiece from each second workpiece manufacturing machine 2; the confluence conveying line 63 is connected to the first real tray conveying line 3 and the second real tray conveying line 4, and the confluence conveying line 63 receives the real trays 9 from the first real tray conveying line 3 and the second real tray conveying line 4 according to a preset order; the input end and the output end of the workpiece taking station 7 are respectively connected to the output end of the confluence conveying line 63 and the input end of the empty tray conveying line 5; and the electrical control module is communicatively connected to the empty tray conveying line 5, and the electrical control module controls the empty tray conveying line 5 by using a control method, so that the conveying logistics line reaches a stable conveying state within a working set time, and the stable conveying state comprises that the real-time number of the real trays in the first real tray conveying line and the second real tray conveying line respectively falls within a first set range and a second set range.

[0170] As shown in FIG. 7, the control method comprises:

[0171] S12, a real-time number information acquisition step: the electrical control module acquires real-time number information of the real trays in the first real tray conveying line and the real trays in the second real tray conveying line;

[0172] S13, an empty tray distribution step: the electrical control module controls the number of the empty trays conveyed by the empty tray conveying line to each first workpiece manufacturing machine and each second workpiece manufacturing machine according to the real-time number information.

[0173] In the battery cell manufacturing process, the tray logistics control method is applied to control the transfer of the tray carrying bare cells. The first workpiece manufacturing machine 1 is used to wind A-type bare cells, the second workpiece manufacturing machine 2 is used to wind B-type bare cells, the empty tray conveying line 5 conveys empty trays 8 to each first workpiece manufacturing machine 1 and each second workpiece manufacturing machine 2, the empty tray 8 sent into the first workpiece manufacturing machine 1 receives the A-type bare cells wound by the first workpiece manufacturing machine 1 and is sent out to the first real tray conveying line 3, the empty tray 8 sent into the second workpiece manufacturing machine 2 receives the B-type bare cells wound by the second workpiece manufacturing machine 2 and is sent out to the second real tray conveying line 4, the real trays 9 on the first real tray conveying line 3 and the real trays 9 on the second real tray conveying line 4 are conveyed one by one to the converging conveying line 63 in a predetermined order, so that the A-type bare cells and the B-type bare cells on the converging conveying line 63 are arranged in the order of the bare cells in the battery cell, and the arranged bare cells are taken out one by one and moved to the integration device for integration, the bare cells on the converging conveying line 63 are taken out, leaving empty trays 8, the empty trays 8 flow back to the empty tray conveying line 5 from the converging conveying line 63, and the cycle is repeated to realize the conveying of the bare cells.

[0174] Exemplarily, if the real-time number of real trays 9 on the first real tray conveying line 3 and the second real tray conveying line 4 is relatively balanced, the electrical control module controls the empty tray conveying line 5 to convey empty trays 8 to the first workpiece manufacturing machine 1 and each second workpiece manufacturing machine 2 at a relatively balanced ratio; if one or more of a certain type of workpiece manufacturing machine is in a standby state, which reduces the output speed of the bare cells of that type, it will make the number of real trays 9 on the first real tray conveying line 3 and the second real tray conveying line 4 differ greatly, that is, the number of bare cells on one is relatively large, and the number of bare cells on the other is relatively small. At this time, the electrical control module increases the number of empty trays 8 allocated to the workpiece manufacturing machine corresponding to the small number of bare cells, and reduces the number of empty trays 8 allocated to the workpiece manufacturing machine corresponding to the large number of bare cells, so that the small number of bare cells is produced at a normal speed, and the large number of bare cells is produced at a slower speed. This mode of operation can make the real-time number of two types of bare cells balanced after a certain period of time, so that the stable and continuous production of battery cells can be realized, thereby improving the production efficiency of battery cells.

[0175] In the above conveying process, the electrical control module controls the number of empty trays 8 conveyed to each workpiece manufacturing machine according to the real-time number of two types of bare cells, thereby affecting the output speed of two types of bare cells. Therefore, with the passage of time, the real-time number difference between the two types of bare cells can be reduced, thereby achieving a stable conveying state. The stable and continuous production of battery cells can be realized, thereby improving the production efficiency of battery cells.

[0176] In some embodiments of the present disclosure, the electrical control module has a first control mode, a second control mode and a third control mode, the first control mode as the initial default mode, as shown in FIG. 8, the empty tray distribution step includes:

[0177] S131, in the case that the real-time number of real trays 9 in the first real tray conveying line 3 and the real-time number of real trays 9 in the second real tray conveying line 4 are respectively within the first set range and the second set range, or are respectively less than the lower limit value of the first set range and the lower limit value of the second set range, or are respectively greater than the upper limit value of the first set range and the upper limit value of the second set range, the electrical control module adopts the first control mode.

[0178] S132, in the case that the real-time number of real trays 9 in the first real tray conveying line 3 is less than the lower limit value of the first set range, and the real-time number of real trays 9 in the second real tray conveying line 4 is greater than the upper limit value of the second set range, the electrical control module adopts the second control mode.

[0179] S133, in the case that the real-time number of real trays 9 in the first real tray conveying line 3 is greater than the upper limit value of the first set range, and the real-time number of real trays 9 in the second real tray conveying line 4 is less than the lower limit value of the second set range, the electrical control module adopts the third control mode.

[0180] It can be understood that there is no fixed sequence between the three steps of step S131, step S132 and step S133, and the execution order of the three steps is selected according to the result obtained in step S12.

[0181] The above three control modes are switched according to the real-time number of real trays 9, so that the conveying logistics line in the unbalanced state can reach a stable conveying state within a set time, thereby enabling the stable and continuous production of battery monomers, and further improving the production efficiency of battery monomers.

[0182] In some embodiments of the present disclosure, in the first control mode, the electrical control module controls the empty tray conveying line 5 to convey a set number of empty trays 8 from the first to the last workpiece manufacturing machine in turn, and after all the workpiece manufacturing machines meet the set number of empty trays 8, the empty trays 8 are increased in turn from the first to the last workpiece manufacturing machine until the number of empty trays 8 cached by each workpiece manufacturing machine reaches the maximum allowed cache amount; in the second control mode, the electrical control module controls the empty tray conveying line 5 to preferentially input empty trays 8 to the first workpiece manufacturing machine 1, keep the number of empty trays 8 cached by each first workpiece manufacturing machine 1 at the maximum allowed cache amount, and convey at least a set number of empty trays 8 to the second workpiece manufacturing machine 2 and temporarily store these empty trays 8 outside the entrance of the second workpiece manufacturing machine 2; in the third control mode, the electrical control module controls the empty tray conveying line 5 to preferentially input empty trays 8 to the second workpiece manufacturing machine 2, keep the number of empty trays 8 cached by each second workpiece manufacturing machine 2 at the maximum allowed cache amount, and convey at least a set number of empty trays 8 to the first workpiece manufacturing machine 1 and temporarily store these empty trays 8 outside the entrance of the first workpiece manufacturing machine 1; the set number includes 3.

[0183] Inputting empty trays 8 to the workpiece manufacturing machine means sending empty trays 8 into the workpiece manufacturing machine, and the empty trays 8 will receive the wound bare cells as the workpiece manufacturing machine runs, so that the workpiece manufacturing machine continues to run. Temporarily storing empty trays 8 outside the entrance of the workpiece manufacturing machine means conveying the empty trays 8 to the outside of the entrance of the workpiece manufacturing machine without entering the workpiece manufacturing machine. In this case, the workpiece manufacturing machine will be temporarily suspended because it does not receive the empty trays 8 to receive the bare cells, so the speed of the workpiece manufacturing machine to output the bare cells is reduced, while the other workpiece manufacturing machine continues to run stably due to the normal input of empty trays 8, so that the speed of the other workpiece manufacturing machine to output the bare cells remains unchanged. Therefore, after a period of time, the real-time number of two kinds of bare cells can reach a balance, that is, the real-time number of the real trays 9 in the first real tray conveying line 3 and the real trays 9 in the second real tray conveying line 4 are respectively within the first set range and the second set range.

[0184] After the real-time number of two kinds of bare cells reaches the balance state, the empty trays 8 temporarily stored outside the entrance of the workpiece manufacturing machine are input into the workpiece manufacturing machine, so that the workpiece manufacturing machine starts to run and starts to output bare cells at a normal speed. Temporarily storing empty trays 8 outside the entrance of the workpiece manufacturing machine is to input these empty trays 8 into the workpiece manufacturing machine in time after switching the control mode, so that the workpiece manufacturing machine runs in time, preventing the output speed of the bare cells from being affected due to the untimely input of empty trays 8.

[0185] The above is the specific operation method of the three control modes, which can make the real-time number of the real trays 9 in the first real tray conveying line 3 and the second real tray conveying line 4 respectively within the first set range and the second set range within the working set time of the conveying logistics line.

[0186] In some embodiments of the present disclosure, the workpiece includes a bare cell.

[0187] The conveying logistics line is applied to the scheme of conveying bare cells, realizes the conveying of bare cells, and can keep the stable and continuous production of battery monomers, thereby improving the production efficiency of battery monomers.

[0188] FIG. 9 is a flowchart of a conveying logistics method according to some embodiments of the present disclosure; FIG. 10 is a flowchart of a conveying logistics method according to other embodiments of the present disclosure; and FIG. 11 is a flowchart of a conveying logistics method according to still other embodiments of the present disclosure.

[0189] The present disclosure also provides a conveying logistics method for a conveying logistics line. The conveying logistics line uses the conveying logistics method to achieve a stable conveying state within a working set time. The stable conveying state includes that the real-time number of real trays in the first real tray conveying line 3 and the second real tray conveying line 4 is respectively within the first set range and the second set range. The conveying logistics line includes an empty tray conveying line 5, a first real tray conveying line 3, a second real tray conveying line 4, a merging conveying line 63, a workpiece taking station 7, and an electrical control module. The empty tray conveying line 5 has a plurality of workpiece manufacturing machines distributed along the extension direction of the empty tray conveying line 5. The plurality of workpiece manufacturing machines include at least one first workpiece manufacturing machine 1 and at least one second workpiece manufacturing machine 2 which are alternately distributed. The first real tray conveying line 3 is connected to the output end of each first workpiece manufacturing machine 1. The first real tray conveying line 3 is configured to receive and convey the real tray 9 carrying the first workpiece from each first workpiece manufacturing machine 1. The second real tray conveying line 4 is connected to the output end of each second workpiece manufacturing machine 2. The second real tray conveying line 4 is configured to receive and convey the real tray 9 carrying the second workpiece from each second workpiece manufacturing machine 2. The merging conveying line 63 is connected to the first real tray conveying line 3 and the second real tray conveying line 4. The input end and the output end of the workpiece taking station 7 are connected to the output end of the merging conveying line 63 and the input end of the empty tray conveying line 5. The electrical control module is communicatively connected to the empty tray conveying line 5.

[0190] As shown in FIG. 9, the workpiece conveying logistics method includes:

[0191] S1, electrical control step: the electrical control module obtains real-time quantity information of the real trays in the first real tray conveying line and the second real tray conveying line, and controls the number of empty trays conveyed by the empty tray conveying line to each first workpiece manufacturing machine and each second workpiece manufacturing machine according to the real-time quantity information;

[0192] S2, workpiece receiving step: the workpiece manufacturing machine inputs the empty tray to the receiving position, and puts the manufactured workpiece into the empty tray, and then outputs the real tray carrying the workpiece to the first real tray conveying line and the second real tray conveying line, wherein the first workpiece manufacturing machine and the second workpiece manufacturing machine output the real tray to the first real tray conveying line and the second real tray conveying line respectively;

[0193] S3, merging step: the merging conveying line receives the real trays from the first real tray conveying line and the second real tray conveying line according to a preset sequence;

[0194] S4, workpiece taking step: the workpiece taking station receives the real tray from the merging conveying line, the workpiece in the real tray is taken away, and the empty tray is left at the output end of the workpiece taking station, and the empty tray is conveyed to the empty tray conveying line by the workpiece taking station.

[0195] The workpiece conveying logistics method is used for manufacturing battery monomers. The first workpiece manufacturing machine 1 is used for winding A-type bare cells, the second workpiece manufacturing machine 2 is used for winding B-type bare cells, the empty tray conveying line 5 conveys empty trays 8 to each first workpiece manufacturing machine 1 and each second workpiece manufacturing machine 2, the empty tray 8 sent into the first workpiece manufacturing machine 1 receives the A-type bare cells wound by the first workpiece manufacturing machine 1 and is then sent out to the first real tray conveying line 3, the empty tray 8 sent into the second workpiece manufacturing machine 2 receives the B-type bare cells wound by the second workpiece manufacturing machine 2 and is then sent out to the second real tray conveying line 4, the real trays 9 on the first real tray conveying line 3 and the real trays 9 on the second real tray conveying line 4 are conveyed to the merging conveying line 63 one by one according to a preset sequence, so that the A-type bare cells and the B-type bare cells on the merging conveying line 63 are arranged in the sequence of bare cells in the battery monomer, the arranged bare cells are taken away one by one and moved to the integration device for integration, the bare cells on the merging conveying line 63 are taken away, leaving the empty trays 8, the empty trays 8 flow back to the empty tray conveying line 5 from the merging conveying line 63, and the cycle is repeated to realize the conveying of the bare cells.

[0196] Exemplarily, during the conveying process, if the number of the real trays 9 on the first real tray conveying line 3 and the second real tray conveying line 4 is relatively balanced, the electrical control module controls the empty tray conveying line 5 to convey the empty trays 8 to the first workpiece manufacturing machine 1 and each second workpiece manufacturing machine 2 at a relatively balanced proportion; if the output speed of one or more of a certain workpiece manufacturing machine is reduced when it is in the waiting state, the number of the real trays 9 on the first real tray conveying line 3 and the second real tray conveying line 4 will be greatly different, that is, the number of the bare cells on one is relatively large, and the number of the bare cells on the other is relatively small, at this time, the electrical control module increases the number of the empty trays 8 allocated to the workpiece manufacturing machine corresponding to the bare cells with a small number, and reduces the number of the empty trays 8 allocated to the workpiece manufacturing machine corresponding to the bare cells with a large number, so that the bare cells with a small number are produced at a normal speed, and the bare cells with a large number are produced at a slower speed, which can make the real-time number of the two kinds of bare cells reach a balance after a certain period of time, so that the battery cell production can be stably and continuously carried out, thereby improving the production efficiency of the battery cell.

[0197] In the above conveying process, the electrical control module controls the number of the empty trays 8 conveyed to each workpiece manufacturing machine according to the real-time number of the two kinds of bare cells, thereby affecting the output speed of the two kinds of bare cells, so that the real-time number difference of the two kinds of bare cells can be reduced over time, thereby reaching a stable conveying state. The battery cell production can be stably and continuously carried out, thereby improving the production efficiency of the battery cell.

[0198] In some embodiments of the present disclosure, as shown in FIG. 10, the electrical control step includes:

[0199] S11, initial allocation step: the electrical control module controls the empty tray conveying line to convey the empty trays not carrying workpieces to each workpiece manufacturing machine in an initial default mode;

[0200] S12, real-time number information acquisition step: the electrical control module acquires real-time number information of the real trays on the first real tray conveying line and the real trays on the second real tray conveying line;

[0201] S13, empty tray allocation step: the electrical control module controls the number of the empty trays conveyed by the empty tray conveying line to each first workpiece manufacturing machine and each second workpiece manufacturing machine according to the real-time number information.

[0202] Therefore, the range of the real-time quantity of the first workpiece and the second workpiece can be obtained through the above steps, which provides a basis for the control of the empty tray conveying line by the electrical control module, so that the empty tray conveying line is appropriately allocated with the empty trays by the two workpiece manufacturing machines, the output speed of the two workpiece manufacturing machines is adjusted, and the real-time quantity of the two bare electric cores can be balanced after a certain period of work. Therefore, the battery cell production can be continuously and stably carried out, and the production efficiency of the battery cell is improved.

[0203] In some embodiments of the present disclosure, the electrical control module has a first control mode, a second control mode and a third control mode. The first control mode is an initial default mode. As shown in FIG. 11, the empty tray allocation step includes:

[0204] S131, when the real-time quantity of the real tray 9 in the first real tray conveying line 3 and the real-time quantity of the real tray 9 in the second real tray conveying line 4 are respectively within the first set range and the second set range, or are respectively less than the lower limit value of the first set range and the lower limit value of the second set range, or are respectively greater than the upper limit value of the first set range and the upper limit value of the second set range, the electrical control module adopts the first control mode;

[0205] S132, when the real-time quantity of the real tray 9 in the first real tray conveying line 3 is less than the lower limit value of the first set range, and the real-time quantity of the real tray 9 in the second real tray conveying line 4 is greater than the upper limit value of the second set range, the electrical control module adopts the second control mode;

[0206] S133, when the real-time quantity of the real tray 9 in the first real tray conveying line 3 is greater than the upper limit value of the first set range, and the real-time quantity of the real tray 9 in the second real tray conveying line 4 is less than the lower limit value of the second set range, the electrical control module adopts the third control mode.

[0207] It can be understood that there is no fixed sequence between the steps S131, S132 and S133, and the execution sequence of the three steps is selected according to the result obtained in step S12.

[0208] The above three control modes are switched according to the range of the real-time quantity of the real tray 9, so that the conveying logistics line in the unbalanced state can reach a stable conveying state within a set time, thereby enabling the battery cell production to be continuously and stably carried out, and further improving the production efficiency of the battery cell.

[0209] In some embodiments of the present disclosure, in the first control mode, the electrical control module controls the empty tray conveying line 5 to sequentially convey a set number of empty trays 8 from the first to the last workpiece manufacturing machine, and after all the workpiece manufacturing machines meet the set number of empty trays 8, the empty trays 8 are sequentially increased one by one from the first to the last workpiece manufacturing machine until the number of empty trays 8 cached by each workpiece manufacturing machine reaches the maximum allowed cache amount.

[0210] In the second control mode, the electrical control module controls the empty tray conveying line 5 to preferentially input empty trays 8 to the first workpiece manufacturing machine 1, keep the number of empty trays 8 cached by each first workpiece manufacturing machine 1 at the maximum allowed cache amount, and convey at least a set number of empty trays 8 to the second workpiece manufacturing machine 2 and temporarily store these empty trays 8 outside the entrance of the second workpiece manufacturing machine 2.

[0211] In the third control mode, the electrical control module controls the empty tray conveying line 5 to preferentially input empty trays 8 to the second workpiece manufacturing machine 2, keep the number of empty trays 8 cached by each second workpiece manufacturing machine 2 at the maximum allowed cache amount, and convey at least a set number of empty trays 8 to the first workpiece manufacturing machine 1 and temporarily store these empty trays 8 outside the entrance of the first workpiece manufacturing machine 1. The set number includes 3.

[0212] Inputting empty trays 8 to the workpiece manufacturing machine means sending the empty trays 8 into the workpiece manufacturing machine, and the empty trays 8 will receive the wound bare cells as the workpiece manufacturing machine runs, so that the workpiece manufacturing machine continues to run. Temporarily storing empty trays 8 outside the entrance of the workpiece manufacturing machine means conveying the empty trays 8 to the outside of the entrance of the workpiece manufacturing machine without entering the workpiece manufacturing machine. In this case, the workpiece manufacturing machine will be temporarily suspended due to the lack of empty trays 8 to receive the bare cells, so the speed of the workpiece manufacturing machine to output the bare cells is reduced, while the other workpiece manufacturing machine continues to run stably due to the normal input of empty trays 8, so that the speed of the other workpiece manufacturing machine to output the bare cells remains unchanged. Therefore, after a period of time, the real-time number of two kinds of bare cells can reach a balance, that is, the real-time number of the real trays 9 in the first real tray conveying line 3 and the real trays 9 in the second real tray conveying line 4 are respectively within the first set range and the second set range.

[0213] After the real-time number of two kinds of bare cells reaches the balance state, the empty trays 8 temporarily stored outside the entrance of the workpiece manufacturing machine are input into the workpiece manufacturing machine, so that the workpiece manufacturing machine starts to run and starts to output the bare cells at a normal speed. Temporarily storing empty trays 8 outside the entrance of the workpiece manufacturing machine is to timely input these empty trays 8 into the workpiece manufacturing machine after switching the control mode, so that the workpiece manufacturing machine runs in time, preventing the output speed of the kind of bare cells from being affected due to the untimely input of empty trays 8.

[0214] The above is the specific operation mode of the three control modes, which can make the real-time number of the real trays 9 in the first real tray conveying line 3 and the second real tray conveying line 4 respectively within the first set range and the second set range within the set time of the conveying logistics line.

[0215] The temporary conveying of 3 empty trays 8 to the workpiece manufacturing machine can not only meet the demand of the workpiece manufacturing machine for empty trays 8 in a short time, but also leave enough empty trays 8 for other workpiece manufacturing machines, so that the empty trays 8 can be circulated enough, thereby ensuring the normal operation of the conveying logistics line.

[0216] In some embodiments of the present disclosure, the set number can be 2, 4, 5, or 6, and of course, can also be other numbers, which are not limited here.

[0217] In some embodiments of the present disclosure, the workpiece includes a bare cell.

[0218] The conveying logistics line is applied to the scheme of conveying bare cells, realizes the conveying of bare cells, and can keep the stable and continuous production of battery monomers, thereby improving the production efficiency of the battery monomers.

[0219] In the following, specific examples of some embodiments of the present disclosure will be described with reference to the accompanying drawings.

[0220] As a specific example, the conveying logistics line mainly consists of hardware devices and electrical control. The hardware devices include a winding machine A (the first workpiece manufacturing machine 1), a winding machine B (the second workpiece manufacturing machine 2), a first real tray A logistics line (the first real tray conveying line 3), a real tray B logistics line (the second real tray conveying line 4), an empty tray backflow logistics line (the empty tray conveying line 5), a real tray A elevator (the first lifting mechanism 61), a second real tray A logistics line (the real tray conveying line 62), a real tray confluence logistics line (the confluence conveying line 63), an empty tray backflow elevator (the second lifting mechanism 64), a tray without bare cells (the empty tray 8), a cell taking station (the workpiece taking station 7), a tray with bare cells (the real tray 9), and the like. The electrical control module (the electrical control module) includes a complete set of electrical control hardware loop and PLC program. The empty tray backflow logistics line is located at the bottom layer, the real tray B logistics line and the second real tray A logistics line are located at the second layer, and the first real tray A logistics line is located at the third layer.

[0221] The empty tray without bare battery cell is returned to the winding machine A and winding machine B by the empty tray return flow line, and is lifted to the first real tray A flow line and real tray B flow line by the lifting mechanism in the winding machine. The real tray with A battery cell is lowered from the third layer to the second real tray A flow line on the second layer by the real tray A lifter on the first real tray A flow line, and the real tray with B battery cell is output to the real tray B flow line on the second layer. The electrical control module controls the order of A battery cell and B battery cell entering the real tray confluence flow line, so that the A battery cell and B battery cell are arranged in the order of bare battery cell in the battery monomer. The battery cell in the tray is taken out at the battery cell taking station in the subsequent process, and the empty tray is released.

[0222] The empty tray enters the empty tray return lifter, and is returned to the empty tray return flow line. In the returning process, the electrical control module controls the number of empty trays delivered to each winding machine A and each winding machine B according to the real-time number of two kinds of bare battery cells, so as to affect the output speed of two kinds of bare battery cells, so that the real-time number difference of two kinds of bare battery cells can be reduced, thereby achieving a stable delivery state.

[0223] The above embodiments are only used to illustrate the technical solutions of the present disclosure, but not limit the same. Although the present disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent replacements to some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present disclosure, and they should be covered in the scope of the specification of the present disclosure. In particular, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any manner. Industrial applicability

[0224] The present disclosure discloses a conveying flow line and method, and a tray flow control method. The conveying flow line comprises an empty tray conveying line, a first real tray conveying line, a second real tray conveying line, a confluence conveying line, a workpiece taking station, and an electrical control module. The electrical control module is communicatively connected to the empty tray conveying line, and is configured to control the number of empty trays delivered by the empty tray conveying line to each first workpiece manufacturing machine and each second workpiece manufacturing machine according to real-time number information of real trays in the first real tray conveying line and the second real tray conveying line, so as to achieve a stable delivery state within a set time of the conveying flow line. The stable delivery state includes that the real-time number of real trays in the first real tray conveying line and the second real tray conveying line is within a first set range and a second set range, respectively. The conveying flow line and method, and the tray flow control method provided by the present disclosure simplify the structure and improve the conveying efficiency.

Claims

1. A conveying logistics line, comprising: an empty tray conveying line, a plurality of workpiece manufacturing machines being arranged along an extension direction of the empty tray conveying line in sequence, the plurality of workpiece manufacturing machines comprising at least one first workpiece manufacturing machine and at least one second workpiece manufacturing machine arranged alternately, the empty tray conveying line being connected with an input end of each of the workpiece manufacturing machines, and the empty tray conveying line being configured to convey an empty tray without a workpiece to each of the workpiece manufacturing machines; a first real tray conveying line connected with an output end of each of the first workpiece manufacturing machines, the first real tray conveying line being configured to receive and convey a real tray carrying a first workpiece from each of the first workpiece manufacturing machines; a second real tray conveying line connected with an output end of each of the second workpiece manufacturing machines, the second real tray conveying line being configured to receive and convey a real tray carrying a second workpiece from each of the second workpiece manufacturing machines; a merging conveying line connected with the first real tray conveying line and the second real tray conveying line, the merging conveying line being configured to receive the real tray from the first real tray conveying line and the real tray from the second real tray conveying line according to a preset order; a workpiece taking station having an input end and an output end connected with an output end of the merging conveying line and an input end of the empty tray conveying line, respectively; an electrical control module communicatively connected with the empty tray conveying line, and configured to control a number of empty trays conveyed by the empty tray conveying line to each of the first workpiece manufacturing machines and each of the second workpiece manufacturing machines according to real-time quantity information of the real trays on the first real tray conveying line and the second real tray conveying line, so that a stable conveying state is achieved within a set time of operation of the conveying logistics line, the stable conveying state including that the real-time quantity of the real trays on the first real tray conveying line and the real-time quantity of the real trays on the second real tray conveying line are within a first set range and a second set range, respectively.

2. The conveyor flow line of claim 1, wherein, The first real tray conveying line is provided with a first tray quantity detection assembly configured to detect a relationship between the real-time quantity of the real trays on the first real tray conveying line and upper and lower limit values of the first set range. The second real tray conveying line is provided with a second tray quantity detection assembly configured to detect a relationship between the real-time quantity of the real trays on the second real tray conveying line and upper and lower limit values of the second set range. The electrical control module is communicatively connected with the first tray quantity detection assembly and the second tray quantity detection assembly, and is capable of controlling the number of empty trays conveyed by the empty tray conveying line to each of the first workpiece manufacturing machines and each of the second workpiece manufacturing machines according to data information detected by the first tray quantity detection assembly and the second tray quantity detection assembly.

3. The conveyor flow line of claim 2, wherein, The first tray quantity detection assembly comprises a first material shortage detection sensor and a first material fullness detection sensor, and the first material shortage detection sensor and the first material fullness detection sensor are arranged on a conveying path of the first real tray conveying line in sequence. the first empty material detection sensor is triggered when the real-time number of the real pallets in the first real pallet conveying line is less than the lower limit value of the first set range, and the first full material detection sensor is triggered when the real-time number of the real pallets in the first real pallet conveying line is greater than the upper limit value of the first set range; the second pallet number detection assembly comprises a second empty material detection sensor and a second full material detection sensor, which are arranged in sequence on the conveying path of the second real pallet conveying line, the second empty material detection sensor is triggered when the real-time number of the real pallets in the second real pallet conveying line is less than the lower limit value of the second set range, and the second full material detection sensor is triggered when the real-time number of the real pallets in the second real pallet conveying line is greater than the upper limit value of the second set range.

4. The conveyance logistics line of any one of claims 1 to 3, wherein, the electrical control module has a first control mode, a second control mode and a third control mode, when the real-time number of the real pallets in the first real pallet conveying line and the real-time number of the real pallets in the second real pallet conveying line are respectively within the first set range and the second set range, or are respectively less than the lower limit value of the first set range and the lower limit value of the second set range, or are respectively greater than the upper limit value of the first set range and the upper limit value of the second set range, the electrical control module adopts the first control mode, and the first control mode also serves as an initial default mode; when the real-time number of the real pallets in the first real pallet conveying line is less than the lower limit value of the first set range, and the real-time number of the real pallets in the second real pallet conveying line is greater than the upper limit value of the second set range, the electrical control module adopts the second control mode; when the real-time number of the real pallets in the first real pallet conveying line is greater than the upper limit value of the first set range, and the real-time number of the real pallets in the second real pallet conveying line is less than the lower limit value of the second set range, the electrical control module adopts the third control mode.

5. The conveying logistics line according to claim 4, wherein in the first control mode, the electrical control module controls the empty pallet conveying line to input a set number of empty pallets from the first workpiece manufacturing machine to the last workpiece manufacturing machine in sequence, and after all the workpiece manufacturing machines satisfy the set number of empty pallets, the empty pallet conveying line is controlled to increase one empty pallet in sequence from the first workpiece manufacturing machine to the last workpiece manufacturing machine until the number of empty pallets cached by each workpiece manufacturing machine reaches the maximum allowed cache amount; in the second control mode, the electrical control module controls the empty pallet conveying line to preferentially input empty pallets to the first workpiece manufacturing machine, keeps the number of empty pallets cached by each first workpiece manufacturing machine to reach the maximum allowed cache amount, and inputs at least the set number of empty pallets to the second workpiece manufacturing machine and temporarily stores these empty pallets outside the inlet of the second workpiece manufacturing machine, ​ The empty trays temporarily stored outside the entrance of the second workpiece manufacturing machine are used to input the second workpiece manufacturing machine when the conveying logistics line is switched from the second control mode to the first control mode; In the third control mode, the electrical control module controls the empty tray conveying line to preferentially input empty trays into the second workpiece manufacturing machine, keeps the number of empty trays cached in each second workpiece manufacturing machine at the maximum allowed cache amount, and conveys at least the set number of empty trays to the first workpiece manufacturing machine and temporarily stores these empty trays outside the entrance of the first workpiece manufacturing machine, The empty trays temporarily stored outside the entrance of the first workpiece manufacturing machine are used to input the first workpiece manufacturing machine when the conveying logistics line is switched from the third control mode to the first control mode.

6. The conveyance logistics line of claim 5, wherein, The set number includes 3.

7. The conveyance logistics line of any one of claims 1 to 6, wherein, The conveying paths of the first empty tray conveying line, the second empty tray conveying line, and the empty tray conveying line are sequentially distributed from top to bottom, and the workpiece manufacturing machines are arranged on the same side of the first empty tray conveying line, the second empty tray conveying line, and the empty tray conveying line.

8. The conveyance logistics line of claim 7, wherein, The conveying paths of the second empty tray conveying line, the converging conveying line, and the workpiece taking station have the same height; The conveying logistics line further includes a first lifting mechanism, a third empty tray conveying line, and a second lifting mechanism, the conveying path of the third empty tray conveying line and the conveying path of the second empty tray conveying line have the same height, the top input end and the bottom output end of the first lifting mechanism are connected to the output end of the first empty tray conveying line and the input end of the third empty tray conveying line respectively, and the output end of the third empty tray conveying line is connected to the input end of the converging conveying line, The top input end and the bottom output end of the second lifting mechanism are connected to the output end of the workpiece taking station and the input end of the empty tray conveying line respectively.

9. The conveyance logistics line of any one of claims 1 to 8, wherein, The workpiece includes a bare cell.

10. A tray logistics control method applied to a conveying logistics line, the conveying logistics line comprising: an empty tray conveying line, a plurality of workpiece manufacturing machines are sequentially arranged along the extension direction of the empty tray conveying line, the plurality of workpiece manufacturing machines include at least one first workpiece manufacturing machine and at least one second workpiece manufacturing machine arranged alternately, the empty tray conveying line is connected to the input end of each workpiece manufacturing machine, and the empty tray conveying line is configured to convey empty trays without carrying workpieces to each workpiece manufacturing machine; a first real tray conveying line connected to the output end of each first workpiece manufacturing machine, the first real tray conveying line is configured to receive and convey real trays carrying first workpieces from each first workpiece manufacturing machine; a second real tray conveying line connected to the output end of each second workpiece manufacturing machine, the second real tray conveying line is configured to receive and convey real trays carrying second workpieces from each second workpiece manufacturing machine; a merging conveying line connected to the first real tray conveying line and the second real tray conveying line, the merging conveying line receiving the real trays from the first real tray conveying line and the second real tray conveying line according to a preset order; a workpiece taking station, an input end and an output end of which are connected to an output end of the merging conveying line and an input end of the empty tray conveying line respectively; an electrical control module, which is communicatively connected to the empty tray conveying line, and controls the empty tray conveying line using the control method to make the conveying logistics line reach a stable conveying state within a working set time, the stable conveying state including that real-time numbers of the real trays in the first real tray conveying line and the second real tray conveying line are respectively within a first set range and a second set range; the control method includes: a real-time number information acquisition step, in which the electrical control module acquires real-time number information of the real trays in the first real tray conveying line and the real trays in the second real tray conveying line; an empty tray distribution step, in which the electrical control module controls the empty tray conveying line to convey a number of empty trays to each of the first workpiece manufacturing machine and the second workpiece manufacturing machine according to the real-time number information.

11. The pallet logistics control method according to claim 10, wherein, the electrical control module has a first control mode, a second control mode and a third control mode, the first control mode being an initial default mode, and the empty tray distribution step includes: in a case where the real-time numbers of the real trays in the first real tray conveying line and the real trays in the second real tray conveying line are respectively within the first set range and the second set range, or are respectively less than lower limit values of the first set range and the second set range, or are respectively greater than upper limit values of the first set range and the second set range, the electrical control module adopts the first control mode; in a case where the real-time number of the real trays in the first real tray conveying line is less than the lower limit value of the first set range, and the real-time number of the real trays in the second real tray conveying line is greater than the upper limit value of the second set range, the electrical control module adopts the second control mode; in a case where the real-time number of the real trays in the first real tray conveying line is greater than the upper limit value of the first set range, and the real-time number of the real trays in the second real tray conveying line is less than the lower limit value of the second set range, the electrical control module adopts the third control mode.

12. The tray logistics control method according to claim 11, wherein in the first control mode, the electrical control module controls the empty tray conveying line to convey a set number of empty trays to each of the first workpiece manufacturing machine to the last workpiece manufacturing machine in turn, and after all the workpiece manufacturing machines satisfy the set number of empty trays, the electrical control module controls the empty tray conveying line to increase one empty tray to each of the first workpiece manufacturing machine to the last workpiece manufacturing machine in turn until a number of empty trays cached by each workpiece manufacturing machine reaches a maximum allowed cache amount. ​ In the second control mode, the electrical control module controls the empty tray conveying line to preferentially input empty trays to the first workpiece manufacturing machines, to keep the number of empty trays cached by each of the first workpiece manufacturing machines at the maximum allowed cache amount, and to deliver at least the set number of empty trays to the second workpiece manufacturing machines and temporarily store the empty trays outside the entrances of the second workpiece manufacturing machines; In the third control mode, the electrical control module controls the empty tray conveying line to preferentially input empty trays to the second workpiece manufacturing machines, to keep the number of empty trays cached by each of the second workpiece manufacturing machines at the maximum allowed cache amount, and to deliver at least the set number of empty trays to the first workpiece manufacturing machines and temporarily store the empty trays outside the entrances of the first workpiece manufacturing machines; The set number includes 3.

13. A conveying logistics method, used for a conveying logistics line, The conveying logistics line includes: an empty tray conveying line, along which a plurality of workpiece manufacturing machines are sequentially distributed, the plurality of workpiece manufacturing machines including at least one first workpiece manufacturing machine and at least one second workpiece manufacturing machine which are alternately distributed; a first real tray conveying line connected to the output end of each of the first workpiece manufacturing machines, the first real tray conveying line being configured to receive and convey the real trays carrying the first workpieces from each of the first workpiece manufacturing machines; a second real tray conveying line connected to the output end of each of the second workpiece manufacturing machines, the second real tray conveying line being configured to receive and convey the real trays carrying the second workpieces from each of the second workpiece manufacturing machines; a converging conveying line connected to the first real tray conveying line and the second real tray conveying line; a workpiece taking station having an input end connected to the output end of the converging conveying line and an output end connected to the input end of the empty tray conveying line; an electrical control module communicatively connected to the empty tray conveying line; The conveying logistics method includes: an electrical control step in which the electrical control module acquires real-time quantity information of the real trays on the first real tray conveying line and the second real tray conveying line, and controls the number of empty trays delivered by the empty tray conveying line to each of the first workpiece manufacturing machines and each of the second workpiece manufacturing machines according to the real-time quantity information; a workpiece taking step in which the workpiece manufacturing machines input empty trays to a receiving position, place the manufactured workpieces into the empty trays, and then output the real trays carrying the workpieces to the first real tray conveying line and the second real tray conveying line, wherein the first workpiece manufacturing machines and the second workpiece manufacturing machines output the real trays to the first real tray conveying line and the second real tray conveying line, respectively; a converging step in which the converging conveying line receives the real trays from the first real tray conveying line and the second real tray conveying line according to a preset sequence. a workpiece taking step, the workpiece taking station receiving the full tray from the merging conveyor line, the workpiece in the full tray being taken out and leaving an empty tray at the output of the workpiece taking station, the empty tray being conveyed by the workpiece taking station to the empty tray conveyor line; the conveying logistics method being capable of achieving a stable conveying state within a working setup time, the stable conveying state including the real-time number of the full trays on the first full tray conveyor line and the second full tray conveyor line being within a first setup range and a second setup range, respectively.

14. The conveying logistics method according to claim 13, wherein, the electrical control step includes: an initial allocation step, the electrical control module controlling the empty tray conveyor line to convey an empty tray not carrying a workpiece to each of the workpiece manufacturing machines in an initial default mode; a real-time number information acquisition step, the electrical control module acquiring real-time number information of the full trays on the first full tray conveyor line and the full trays on the second full tray conveyor line; an empty tray allocation step, the electrical control module controlling the empty tray conveyor line to convey a number of empty trays to each of the first workpiece manufacturing machines and each of the second workpiece manufacturing machines according to the real-time number information.

15. The method of conveying a stream of claim 14, wherein, the electrical control module having a first control mode, a second control mode and a third control mode, the first control mode being the initial default mode, the empty tray allocation step including: in a case where the real-time number of the full trays on the first full tray conveyor line and the real-time number of the full trays on the second full tray conveyor line are within the first setup range and the second setup range, respectively, or are less than the lower limit value of the first setup range and the lower limit value of the second setup range, respectively, or are greater than the upper limit value of the first setup range and the upper limit value of the second setup range, respectively, the electrical control module adopts the first control mode; in a case where the real-time number of the full trays on the first full tray conveyor line is less than the lower limit value of the first setup range and the real-time number of the full trays on the second full tray conveyor line is greater than the upper limit value of the second setup range, the electrical control module adopts the second control mode; in a case where the real-time number of the full trays on the first full tray conveyor line is greater than the upper limit value of the first setup range and the real-time number of the full trays on the second full tray conveyor line is less than the lower limit value of the second setup range, the electrical control module adopts the third control mode.

16. The conveying logistics method according to claim 15, wherein, in the first control mode, the electrical control module controls the empty tray conveyor line to convey a setup number of empty trays to each of the workpiece manufacturing machines in turn from the first workpiece manufacturing machine to the last workpiece manufacturing machine, and after all the workpiece manufacturing machines satisfy the setup number of empty trays, the electrical control module controls the empty tray conveyor line to increase one empty tray to each of the workpiece manufacturing machines in turn from the first workpiece manufacturing machine to the last workpiece manufacturing machine until the number of empty trays cached by each of the workpiece manufacturing machines reaches a maximum allowed cache amount. ​ In the second control mode, the electrical control module controls the empty tray conveying line to preferentially input empty trays to the first workpiece manufacturing machines, to keep the number of empty trays cached by each of the first workpiece manufacturing machines up to the maximum allowed cache amount, and to convey at least the set number of empty trays to the second workpiece manufacturing machines and temporarily store the empty trays outside the entrances of the second workpiece manufacturing machines; In the third control mode, the electrical control module controls the empty tray conveying line to preferentially input empty trays to the second workpiece manufacturing machines, to keep the number of empty trays cached by each of the second workpiece manufacturing machines up to the maximum allowed cache amount, and to convey at least the set number of empty trays to the first workpiece manufacturing machines and temporarily store the empty trays outside the entrances of the first workpiece manufacturing machines; The set number comprises 3.

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